Gamera vs. Viras 1968

From the depths of space, a vessel from Planet Viras nears Earth with an intent to occupy the planet and harvest its atmospheric nitrogen, a resource vital to their survival. Gamera Teruo Aragaki intervenes and destroys the ship; but before the vessel falls, the aliens broadcast a warning that Gamera is their enemy.

On Earth, a group of Boy Scouts visit an aquarium to see scientists at work on a two-man mini submarine. Japanese scout Masao Tôru Takatsuka and American scout Jim Carl Craig manage to talk their way aboard. In the water, they spot Gamera, who engages in a playful race with the boys. Their hijinks are interrupted when a second alien vessel envelops them in a Super-Catch Ray. Gamera helps the boys escape, but remains trapped in the field while the aliens study his memories.

Through analysis of Gamera’s memories, the aliens learn of a key weakness: his soft spot for children. The field weakens, and Gamera is freed. The aliens capture Jim and Masao, threatening to kill the boys, and attach a mind-control device to the back of Gamera’s head.

Aboard the spaceship, the boys continually try to escape. Gamera, still under the aliens’ influence, wreaks havoc by destroying dams and cities in bursts. Jim and Masao discover a squid-like creature, who is the leader of the aliens. The boys help Gamera break free from the mind-control device and escape the ship. Next, Gamera attacks the spaceship.

Grounded by Gamera, the aliens reveal that their human forms were disguises, and that all of them look just like their leader. Under the leader’s command, the aliens merge to form Viras, a giant monster who immediately engages Gamera in battle. Though Viras appears to have the upper hand, Gamera kills Viras by flying high into the atmosphere, freezing Viras solid, then dropping him toward the ocean, where he disintegrates upon impact. The boys and a crowd of adults celebrate Gamera’s victory.