Skip to content
What's After the Movie?
Mystery drama

While You Were Sleeping (2024): Cast, Ratings & Plot

While You Were Sleeping (2024) movie poster

While You Were Sleeping is a 2024 mystery drama directed by Chang Youn-hyun, starring Sung Ji-ru as Dr. Cho, Lee Mu-saeng and Son Sook. It runs 1 hour 40 minutes. It holds 62% on TMDB.

Loading streaming availability…
While You Were Sleeping (2024) movie poster
Released
Runtime
1h 40m (100 min)
Director
Chang Youn-hyun
Genres
Drama , Mystery
Original language
Korean
After the credits
No No extra scene
The story

What Is While You Were Sleeping About?

The premise of While You Were Sleeping without spoilers. The whole story is in the plot summary further down.

After the tragic death of her husband in a car accident, a woman grappling with selective amnesia begins to retrace his final journey. As she uncovers details about his life, she confronts an unexpected truth and must deal with the emotional fallout of loss and a changed perception of her past.

Loading streaming availability…
Cast & crew

While You Were Sleeping Cast & Characters

Sung Ji-ru leads the cast as Dr. Cho, with Lee Mu-saeng as Joon-seok and Son Sook as Geum-soon. Directed by Chang Youn-hyun; 7 actors are credited in all.

Also Starring in While You Were Sleeping

· 3 more
From the director

More from Chang Youn-hyun

More films directed by Chang Youn-hyun: Gabi: Russian Coffee, Hwang Jin Yi, Some and Tell Me Something.

Full filmography
Ratings

While You Were Sleeping Reviews & Ratings

While You Were Sleeping holds 62% on TMDB.

Plot

While You Were Sleeping Plot Summary

What happens in While You Were Sleeping from start to finish, spoilers included, with a timeline of 15 key events. The opening is below; the full summary is a 4-minute read.

Spoilers ahead

Lucy Eleanor Moderatz works as a fare token collector for the Chicago Transit Authority, stationed at the busy Randolph/Wabash station, where she quietly harbors a crush on a commuter named Peter Callaghan. On Christmas Day, a sudden moment of bravery changes everything: she pulls him back from the path of danger as thugs shove him onto the tracks, and she accompanies the unconscious man to the hospital. There, a nurse overhears Lucy murmur, “I was gonna marry him,” and misinterprets the confession, spreading the idea that she is his fiancée.

Full summary

The whole story of While You Were Sleeping, scene by scene

Read the full summary
Videos

While You Were Sleeping Trailers & Videos

The trailer of While You Were Sleeping.

Trailer [Subtitled]
Quiz

How Well Do You Know While You Were Sleeping?

10 questions about the story, each with a hint if you get stuck. Pick an answer to see whether you were right.

Question 1 of 10

  1. Question 1: not answered
  2. Question 2: not answered
  3. Question 3: not answered
  4. Question 4: not answered
  5. Question 5: not answered
  6. Question 6: not answered
  7. Question 7: not answered
  8. Question 8: not answered
  9. Question 9: not answered
  10. Question 10: not answered

What is Lucy's job at the Chicago Transit Authority?

Seen While You Were Sleeping?

FAQ

While You Were Sleeping FAQ: Cast, Runtime & Release Date

Runtime, release date, director, cast, ratings, post-credit scenes and language of While You Were Sleeping, each answered in a sentence.

How long is While You Were Sleeping?

While You Were Sleeping runs 1 hour 40 minutes (100 minutes).

When was While You Were Sleeping released?

While You Were Sleeping was released on March 20, 2024.

Who directed While You Were Sleeping?

While You Were Sleeping was directed by Chang Youn-hyun.

More films by Chang Youn-hyun

Who is in the cast of While You Were Sleeping?

While You Were Sleeping stars Sung Ji-ru as Dr. Cho, Lee Mu-saeng as Joon-seok and Son Sook as Geum-soon, among 7 credited actors.

How is While You Were Sleeping rated?

While You Were Sleeping has 62% on TMDB and 3.2/5 on Letterboxd.

Does While You Were Sleeping have a post-credit scene?

No. While You Were Sleeping has no extra scene during or after the credits.

What language is While You Were Sleeping in?

The original language of While You Were Sleeping is Korean.

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