Skip to content
What's After the Movie?
Plot summary

The Tag-Along: Devil Fish (2018) Plot Summary & Timeline

The Tag-Along: Devil Fish (2018) movie poster

The Tag-Along: Devil Fish is a 2018 horror film directed by David Chuang, running 1 hour 55 minutes. This page retells the whole story in 415 words (about 2 minutes to read) and covers 12 key events in order, 5 characters, where and when it is set and 3 themes. Looking for the cast, ratings and where to stream it? See the movie page for The Tag-Along: Devil Fish.

to read the plot summary
2 min
key events in the timeline
12
characters profiled
5
themes explained
3
Loading streaming availability…
The Tag-Along: Devil Fish (2018) movie poster
Released
Runtime
1h 55m
Director
David Chuang
Genre
Horror
Original language
Chinese
No spoilers

What Is The Tag-Along: Devil Fish About?

The premise of The Tag-Along: Devil Fish in 294 words, with nothing given away. The full story follows below.

In the mist‑shrouded streets of modern Taiwan, ancient whispers still drift from shrines and market stalls, weaving a world where the unseen feels almost palpable. Beneath the hum of everyday life, a centuries‑old legend about a fish with a human face lingers in taverns and temple corners, its eerie question—“Is the fish meat tasty?”—echoing like a forbidden lullaby. The film opens against this folkloric tapestry, inviting the audience to feel the subtle chill that rises whenever myth brushes against reality, setting a tone that balances subdued dread with a lingering, almost reverent curiosity.

When a desperate exorcism is staged to free a man from a dark possession, it becomes the unintentional stage for something far more unsettling. Two eager film students, Jun and Hao, arrive with cameras in hand, hoping to capture the supernatural on film, only to find their lenses opening a doorway to the feared devil fish demon. Their youthful enthusiasm and skeptical banter clash with the solemn gravity of the ritual, creating a dynamic tension that drives the story’s emotional core. As the unseen presence begins to ripple through the air, the pair are forced to confront a reality far beyond their academic aspirations.

Guided by a seasoned spirit medium, Mei‑Ling, who carries both the weight of ancestral knowledge and a calm, almost mystical composure, the trio forms an uneasy alliance. Mei‑Ling’s quiet authority and deep respect for the old ways contrast sharply with the students’ modern, technology‑driven perspective, highlighting a clash of generations and belief systems. Together, they stand at the threshold of a world where the line between the living and the otherworldly blurs, setting the stage for a tense, atmospheric pursuit that promises to test their resolve, ingenuity, and faith in the unseen forces that shape their heritage.

Full plot

What Happens in The Tag-Along: Devil Fish?

The complete story of The Tag-Along: Devil Fish, from the first scene to the last, in 415 words (about 2 minutes). Spoilers throughout. Names in the text link to 1 cast member page.

Spoilers ahead

Rooted in Taiwan’s decades-old urban legend about a fish that bears a human face, this prequel revisits the old tale from a new angle. It starts with the famous moment when three men in central Taiwan catch a fish and, as they begin to eat, notice a face emerge from within. The memory of that eerie encounter lingers, and the film captures the chilling line that follows: > 「魚肉好吃嗎?」.

Expanding beyond the legend, the story shifts to the present tension surrounding a group of people—a temple priest, a young boy, and the boy’s mother—who find themselves haunted by malicious spirits released by the caught fish. At the center of the drama is Lin Meihua and her daughter, around whom the supernatural harassment intensifies. The narrative treats the fish’s power as more than a single scare; it becomes a catalyst that unsettles a community and exposes how fear can travel through families and temples alike.

The film also threads connections to The Tag Along universe, hinting at events that precede The Tag Along 2. It situates itself before those later appearances, with nods to characters like the Tiger Temple priest’s son and his grandfather who will show up in the later installments. This setup suggests a larger tapestry of Taiwanese urban legends, where each tale feeds into the next and where motifs of lineage, ritual power, and possession recur across generations.

At the heart of the prequel’s backstory is a descent into origin myth. The demon that possesses Mei-Hua’s daughter is born from the vengeful spirit of a disfigured son of a wealthy man, Mr Chung. His father’s harsh treatment and the boy’s untimely death seed a haunting force that malevolently awakens itself. A master shaman—the father of Lin Chun-Kai’s line—fights the demon and the Tiger Lord’s spirit to protect the living, but the price is grave: the father dies, leaving a legacy of ritual mastery to be carried on by his grandson. That grandson is raised by his grandfather, a master shaman, who trains him to become his successor, setting the stage for the events that will unfold in Tag-Along 2.

The tale remains grounded in its folkloric roots while weaving a modern ensemble story about belief, fear, and the ways in which legends shape lives across generations. Through the threads of possession, prophecy, and ritual, the prequel paints a broader picture of Taiwan’s rich tapestry of folk tales, hinting at how the past echoes into the present and propels the next chapter in the saga.

Timeline

The Tag-Along: Devil Fish Timeline: Every Key Event in Order

12 key events in the order they happen, from “Legend of the human-faced fish begins” to “Prequel closes, foreshadowing Tag-Along 2”. 12 events name a place, across 7 locations.

  1. 1

    Legend of the human-faced fish begins

    An old Taiwanese legend introduces a fish with a human face. Three men catch the strange fish in central Taiwan and hear a chilling question from it: Is the fish meat tasty? The moment marks the beginning of a haunting that threads through the film.

    When:Legendary past Where:Central Taiwan

  2. 2

    The haunting follows the legend

    Following the catch, malicious spirits descend upon the community and begin to torment nearby people. A temple priest, a young boy, and the boy's mother become targets as they struggle to understand the apparition and protect their home. The encounters set the tone for the gathering danger throughout the story.

    When:Shortly after the fish catch Where:Central Taiwan (temple area)

  3. 3

    Origin of the demon from a disfigured son

    The demon's origin is tied to a disfigured son of a wealthy man, Mr Chung. The father abuses the boy because of his rare skin condition, and the boy dies as a consequence. His vengeful spirit is then seized by a malevolent demon, unleashing a dangerous force.

    When:Historical past Where:Chung family estate

  4. 4

    The demon possesses Mei-Hua's daughter

    The demon, amplified by the possession, begins to haunt Mei-Hua's daughter. This arc traces how the girl grows increasingly troubled until she transforms into the girl in red that anchors the original film's lore. The possession marks a turning point linking the backstory to the events beyond.

    When:Present day within the film Where:Mei-Hua's home

  5. 5

    A master shaman fights the demon

    Lin Chun-Kai's father, a master shaman, confronts the demon with aid from the Tiger Lord's spirit. He fights bravely but pays with his life, ensuring the demon's threat remains unresolved for the time being. The sacrifice underscores the gravity of the haunting faced by the families involved.

    When:Historical backstory Where:Tiger Temple

  6. 6

    Lin Chun-Kai is adopted by his grandfather

    After his father's death, Lin Chun-Kai is taken in by his grandfather, a seasoned master shaman who trains him. The old mentor teaches him to carry on the family legacy and protect people from restless spirits. This lineage becomes the foundation for the upcoming Tag-Along storylines.

    When:After father's death Where:Grandfather's temple

  7. 7

    Grandfather trains the heir to succeed the lineage

    The grandfather imparts shamanic knowledge and ritual skills, preparing Lin Chun-Kai to become his father's successor. The training deepens his resolve to confront the demon's ongoing menace. He learns to balance healing, ritual power, and protection.

    When:Years of training Where:Grandfather's temple

  8. 8

    The demon's influence continues to spread

    The demon's power ripples through the community, affecting more people beyond Mei-Hua's daughter. Lin Chun-Kai and his allies piece together the source of the unrest and brace for a long fight ahead. The haunting tests their faith and ritual craft.

    When:Present era within the film Where:Temple vicinity and community

  9. 9

    Connections to Tag-Along legends emerge

    The Tiger Temple's younger generation, including the temple's priest's son and his grandfather, appear within the backstory, hinting at their future roles in The Tag Along 2. Their presence ties the prequel to the ongoing series. The shared mythos strengthens the links between films.

    When:Present-day within the film Where:Tiger Temple

  10. 10

    Origin of the Girl in Red is traced

    The possession that becomes the Girl in Red is linked to the demon's awakening during Mei-Hua's daughter's life. The haunting leaves a lasting mark on the family that resonates with the original film's tone. It clarifies how a familiar image from the later film originates.

    When:Present Where:Mei-Hua's home

  11. 11

    Lin Chun-Kai rises as the family heir

    Lin Chun-Kai is groomed to be the successor of the grandfather's shamanic line. He learns to combine ritual power, healing, and protection to guard against the demon. His development in this prequel sets the stage for his leadership in Tag-Along 2.

    When:Years later, approaching Tag-Along 2 Where:Grandfather's temple

  12. 12

    Prequel closes, foreshadowing Tag-Along 2

    The film closes by confirming Lin Chun-Kai's destiny to inherit the mantle and confront the demon's legacies. The origin story explains the shared mythos that threads into The Tag Along 2. The film ends with anticipation for what comes next in the series.

    When:Before Tag-Along 2 Where:Tiger Temple

Characters

Who Are the Main Characters in The Tag-Along: Devil Fish?

5 characters, among them Lin Meihua, Li Shu-fen and Aron: who each one is and the part they play in the story. Every profile links to the actor’s page.

  • LM

    Lin Meihua

    Played by Francesca Kao

    Meihua is the mother whose daughter becomes a vessel for the demon. She grapples with fear and seeks answers within Taiwan’s mythic traditions, driving the group toward temple rites and exorcism. Her resolve tests family bonds as the haunting intensifies.

    • 🎭 Drama
    • 🧬 Family
    • 🕯️ Supernatural
  • LS

    Li Shu-fen

    Played by Rainie Yang

    The young boy's mother who, along with others, faces harassment from malignant spirits unleashed by the fish. She acts as a stabilizing presence for the group, offering care and strength in the face of terror.

    • 👪 Family
    • 🧭 Fear
    • 🗺️ Legends
  • A

    Aron

    Played by Lung Siu Wa

    The young boy central to the haunting; his experiences become a focal point for the investigation into the demon’s origins. His vulnerability highlights the human cost of the supernatural conflict.

    • 🧒 Youth
    • 🌀 Haunting
    • 🏚️ Mystery
  • SY

    Shen Yi-Jun

    Played by Tiffany Hsu Wei-Ning

    A temple priest who confronts the demon with ritual knowledge. Yi-Jun acts as a bridge between traditional beliefs and the escalating supernatural threat, guiding the team through exorcism rites.

    • 🙏 Priest
    • 🧭 Ritual
    • 🔮 Exorcism
  • LZ

    Lin Zhicheng

    Played by Rexen Cheng Jen-Shuo

    The grandfather figure and master shaman who embodies the ancestral power passed down through generations. His presence anchors the family’s struggle and foreshadows the hero’s path in the lineage.

    • 🧙‍♂️ Shaman
    • 🧭 Ancestry
    • 🗿 Power
Setting

Where and When Is The Tag-Along: Devil Fish Set?

The Tag-Along: Devil Fish is set in Central Taiwan and Tiger Temple. Here is why the place matters to the story.

Where

Central Taiwan, Tiger Temple

The story is set in central Taiwan, grounding the legend in real-world locales tied to local myths. It intertwines everyday life with supernatural rites observed at temples. The Tiger Temple and its associated sites anchor the haunting, linking modern events to ancient beliefs.

  • 🗺️ Central Taiwan
  • 🧭 Legend & folklore
  • 🏮 Temple setting
Themes

What Are the Themes of The Tag-Along: Devil Fish?

3 ideas the story keeps returning to, among them Folklore, Possession & Vengeance and Shamanic Tradition.

  1. 01

    Folklore

    The film leans on a famous Taiwanese folktale to frame the events, showing how a local legend shapes fear and decisions. It ties a well-known ghost story to a broader supernatural world. The prequel aspect expands the origins of the fish-faced demon within Taiwan's oral traditions.

  2. 02

    Possession & Vengeance

    A disfigured, vengeful spirit emerges from a cursed encounter with the fish, attacking families and communities. The possession of Mei-Hua’s daughter serves as the core catalyst for escalating hauntings. The narrative explores how guilt and anger can fuel a malevolent force across generations.

  3. 03

    Shamanic Tradition

    The film foregrounds master shamans and temple rites as tools against a powerful demon. It shows lineage-based knowledge, ritual sacrifice, and spiritual guardians (like the Tiger Lord) as means to confront and slow the haunting. The coming-of-age arc for Lin Chun-Kai ties personal growth to ancestral power and responsibility.

Tone & mood

What Kind of Film Is The Tag-Along: Devil Fish?

Dark in tone, with steady pacing and a moderate story, going by the plot summary.

Tone
Dark
Pacing
Steady
Story
Moderate
Intensity
High

A chilling and oppressive horror film rooted in Taiwanese folklore, steadily building dread through a tale of a vengeful demonic entity that haunts a community and exposes dark family legacies.

  • eerie
  • oppressive
  • dreadful
  • anxious
  • supernatural horror
  • atmospheric
  • demonic possession
  • urban legend
  • folk horror
  • generational curse

Content notes: demonic possession, child endangerment, emotional abuse, supernatural harassment.

Quiz

How well do you remember The Tag-Along: Devil Fish? Test yourself on the story.

Take the quiz
Loading streaming availability…
Read next

Movies Like The Tag-Along: Devil Fish With a Plot Summary

2 films close to The Tag-Along: Devil Fish in story and themes that have a full plot summary here: The Tag-Along 2 (2017) and The Black Demon (2023). 1 of them comes with the ending explained.

All plot summaries

Missing a Movie Plot Summary?

Tell us which film you want explained next: the full story, the timeline, the characters and the ending.

Request a summary
FAQ

The Tag-Along: Devil Fish Plot Questions

5 quick answers about The Tag-Along: Devil Fish, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is The Tag-Along: Devil Fish about?

In the mist‑shrouded streets of modern Taiwan, ancient whispers still drift from shrines and market stalls, weaving a world where the unseen feels almost palpable.

Read the full plot summary

When and where does The Tag-Along: Devil Fish take place?

The Tag-Along: Devil Fish is set in Central Taiwan and Tiger Temple. The story is set in central Taiwan, grounding the legend in real-world locales tied to local myths. It intertwines everyday life with supernatural rites observed at temples.

The setting explained

Who are the main characters in The Tag-Along: Devil Fish?

The story follows Lin Meihua (played by Francesca Kao), Li Shu-fen (played by Rainie Yang), Aron (played by Lung Siu Wa) and Shen Yi-Jun (played by Tiffany Hsu Wei-Ning); the character guide covers 5 characters in all.

All the characters

What are the main themes of The Tag-Along: Devil Fish?

The summary picks out 3 themes: Folklore, Possession & Vengeance and Shamanic Tradition.

The themes explained

Who directed The Tag-Along: Devil Fish?

The Tag-Along: Devil Fish (2018) was directed by David Chuang and runs 1 hour 55 minutes.

David Chuang’s films

Coming soon to your phone

The Plot Explained Movie Summary App

From blockbusters to hidden gems: plot summaries, endings explained and timelines on your phone. Save your favorites and never miss a twist again.

Be the first to know when it launches. Your email stays private, always. Learn more about the app