Hirohiko Katayama (Xiaozhi Yamada), male, 29 years old, ace salesman of ChiFuji Pharmaceutical Company. One day he accidentally fainted and woke up with temporary amnesia due to a blow to the head. He had a ring in his bag, but he had no idea who it was for. At the same time, three women with completely different backgrounds and personalities appear alternately around Katayama. They are Tomihui Sumitomo, who is both beautiful and talented with the company's predecessors, Hiroshi Takazaki (Yoko Makiki), a cheerful and optimistic custom shop, and Suzuki and Keiko, who are often scarred when performing puppet shows in the park. It seems that Katayama has been in contact with them at the same time, with the escalation of the ring battle, Katayama is also gradually brought back to the origin before amnesia. This film is based on the novel of the same name by Akutagawa Award-winning writer Sakuji Ito.