In a small hot spring town in Japan, a ferocious ancient shark reawakens and begins terrorizing the local hot spring facilities. As the threat escalates, the townspeople band together to protect their beloved town from the menacing predator, leading to a fierce and thrilling battle.

Cast and crew reunite to film a spin-off, this time set in Hollywood, boasting more zealous zombies and beefed up with international characters.

Real zombies arrive and terrorize the crew of a zombie film being shot in an abandoned warehouse, said to be the site of military experiments on humans.