52-year-old Ippei has moved back to his apartment after 25 years, as if to start all over again. He used to live here with his girlfriend, Nana, and left her to go to Tokyo with the dream of becoming an actor, but he gave up and returned home. However, by fate, his neighbor is a girl named Nene who looks just like Nana. There is a 27-year age difference between them, so it was only a matter of time before the two were attracted to each other. Tormented by a sense of guilt, Ippei has a physical relationship as if reminiscing about the past... At the same time, Ippei is convinced that she is his daughter.