Kanako (Chikako Kaku), who works at a department store, befriends a customer, Mario (Shiro Sano). Mario hints at marriage, but when he learns that Kanako is pregnant, his attitude changes completely.

The sudden reunion with Mario (Shiro Sano) had confused Kanako (Chikako Kaku). One night, at the Kuribayashi family where the couple were invited, Kanako sat with Mr. and Mrs. Yamada.

A note is found in the apartment that says "Shingo (Yuichi Haba) is a murderer", and Kanako (Chikako Kaku) is harassed again. Shingo tells Kanako, who is angry, about a certain past.

Shingo (Yuichi Haba) discovers a photo of Kanako (Chikako Kaku) wearing sheets. Kanako sees the photo and is convinced that the mysterious incident is the work of Mario (Shiro Sano).

Mario (Shiro Sano) is appointed president when Miyuki (Chisato Yamazaki) becomes pregnant. Mario, who greeted him at the president's inauguration party, became agitated as soon as he saw Kanako (Chikako Kaku).

Kanako (Chikako Kaku) and Mario (Shiro Sano) learn that Miyuki's (Chisato Yamasaki) pregnancy was a kyogen. That night, Kanako confesses her relationship with Mario to Shingo (Yuichi Haba).

Shingo (Yuichi Haba) decides to start over with Kanako (Chikako Kaku). One night when it was decided to move, Kanako entered the study of Mario (Shiro Sano), which was left burnt out.