One day, Hiroshi's homeroom teacher, Sato, brought him home. Hiroshi had been caught shoplifting at a convenience store and was taken in for guidance. Seeing the mother apologize on behalf of her son, Sato came up with a wicked plan: instead of suspending Hiroshi, he would have his way with the mother, Ren. Shocked by her son's shoplifting and frustrated by her sexless marriage, Ren fell prey to Sato...
