Hot Spring Shark Attack is set in a small, hot spring town in Japan, where a ferocious ancient shark reawakens and terrorizes 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.

Hot Spring Shark Attack follows a history of first-time features released by Utopia. The film marks the directorial debut of Morihito Inoue, two-time winner of the National Independent Kaiju Film Championship.

Hot Spring Shark Attack premiered at the 2024 Tokyo International Shark Film Festival where it took home the Audience Award. The movie has its US premiere on June 20, 2025 at the Chattanooga Film Festival.