Following an end-of-term school ceremony, the American boy Bobby decides to go with his friend Akkun into the mountains outside their village, to a place perfect for a secret base. On the way they stop into a mysterious amusement park. They have fun there, but are attacked and cannot leave. Falling in with some other children who are also lost there, they fend off a number of attacks, and gradually learn the truth behind the facility.
Unfortunately the movie Violence Voyager is not yet available on HBO Max.
| Sound | Jean Paul Takahashi | Music |
| Directing | Ujicha | Director |
| Art | Ujicha | Art Direction |
| Production | Kimitsugu Ueno | Producer |
| Production | Reo Anzai | Producer |
| Camera | Ujicha | Director of Photography |
| Production | Shusuke Kataoka | Executive Producer |
| Visual Effects | Ujicha | Character Designer |
| Production | Wakako Tanigaki | Associate Producer |
| Editing | Ujicha | Editor |
| Writing | Ujicha | Writer |
