A wife, Mai, who is confused when her husband, Toshikazu, is arrested as a suspect of a strong obscenity crime, that is, a lewd act. Mai's father-in-law, Naoki, says, "Toshikazu did that because the couple's sex wasn't going well." Calling it a sex guide, he touches Mai's luscious body with lewd hands, forcibly sucks the cock, and pushes him down on the bed. The nightmare of a beautiful bride who has had a physical relationship with her father-in-law continues.