The story of Orochi revolves around the life of the Monzen family. Aoi Monzen, a famous, but aging, movie star and Kazusa and Lisa Monzen her two daughters. Aoi hopes for them both to take over her legacy as a star, but Kazusa does not live up to her expectations. The mother is always pitting the girls against one another competitively. As a result, as the years pass, the love the sisters shared grows to a hidden hatred. When another girl named Orochi saves the girl's mother from a terrible accident a bizarre chain of events is set in motion spanning many years. The atmosphere in their estate builds up until Orochi reveals a terrible truth that the family must keep hidden from the world. Orochi serves as the narrator of the story. The movie is based on a Kazuo Umezu manga series which ran from 1969 to 1970.
| Directing | Norio Tsuruta | Director |
| Writing | Hiroshi Takahashi | Adaptation |
| Writing | Kazuo Umezz | Comic Book |
| Writing | Kazuo Umezz | Story |
| Writing | Hiroshi Takahashi | Writer |
| Sound | Kenji Kawai | Music |
| Crew | Takahide Shibanushi | Cinematography |
| Art | Hidemitsu Yamazaki | Production Design |
| Lighting | Yuichiro Makanae | Lighting Technician |
| Sound | Tsuyoshi Murozono | Sound |
| Editing | Hiroshi Sunaga | Editor |
| Production | Gen Satô | Producer |
| Production | Masatake Kondo | Producer |
| Production | Tsugio Hattori | Producer |
| Production | Tsutomu Yamamoto | Producer |