Yurie, who lives in a company housing complex, was worried because she noticed signs that her quiet son, Ayumu, was being bullied at school. Then one day, a classmate Ayumu brought home told her that Ayumu had been shoplifting. Driven by her desire to protect her son, Yurie promised to do anything, and from then on, she became a sex slave to her son's classmate... Yurie was gang-raped and impregnated as if it were a game. And then she was even forced into mother-son sex with Ayumu, with impregnation occurring inside her...