The director goes to a girls' bar somewhere in Tokyo where a poster girl who had said she was interested in AV after being introduced by a male actor works, and secretly films the bar and the girl. She works hard and is very lively, and they drink together and hit it off. Mayumi, who is meeting an AV director for the first time, is seduced by him that same day and takes him home, where they have sex in front of the camera for the first time! She takes off her clothes and is surprised to see real amateur sex with a girl with a slim waist and big breasts!