The story follows a Roman architect named Lucius, who is having trouble coming up with ideas. One day, he discovers a hidden tunnel underneath a spa that leads him to a modern Japanese bath house. Inspired by the innovations found there, he creates his own spa, Roma Thermae, bringing in the modern ideas to his time.
Unfortunately the movie Thermae Romae is not yet available on Disney Plus.
| Writing | Shogo Muto | Screenplay |
| Directing | Hideki Takeuchi | Director |
| Sound | Norihito Sumitomo | Original Music Composer |
| Writing | Mari Yamazaki | Comic Book |
| Production | Kaoru Matsuzaki | Producer |
| Camera | Kazunari Kawagoe | Director of Photography |
| Lighting | Toshio Suzuki | Gaffer |
| Visual Effects | Kentarô Nishio | Visual Effects Producer |
| Crew | Isao Karasawa | Stunt Coordinator |
| Directing | Katsumi Nojiri | Assistant Director |
| Costume & Make-Up | Tomo Hyakutake | Special Effects Makeup Artist |
| Art | Tomo Hyakutake | Special Props |
| Editing | Hiroshi Matsuo | Editor |
| Sound | Hirokazu Kato | Sound Recordist |
| Art | Yutaka Mogi | Decorator |
| Costume & Make-Up | Haruki Koketsu | Costumer |
| Art | Mitsuo Harada | Production Design |
| Crew | Kazunari Kawagoe | Cinematography |
| Production | Naoto Inaba | Producer |
| Sound | Akira Ito | Sound Editor |
| Production | Miyoshi Kikuchi | Producer |