Mitsuo Yokoyama, who grew up with a strict father, was haunted by strange dreams of sexual intercourse almost every night. Mitsuo's overflowing desire for sex, which reached his age, does not stop, and he even lusts for Satomi, who comes and goes in and out of the Yokoyama family like family. One day, Etsuko Mamiya, an older woman who harbors the light of dangerous desire in her eyes, appears in front of Mitsuo.

Ueno, who came to the downtown area where he spent his youth, reunites with his old friends Kubota, Konno, and Kyoko. He soon learns that Ma-chan, who was like a big brother to them in the past, has passed away. His mistress, Ayako, has also come to the town. Around that time, Ueno's secretary, Miyuki, who was the president of a large company, arrives. Ueno embraces her in response to her feelings. Ueno and the others decide to build a grave for Ma-chan, but...