The Kinoshita couple runs a convenience store. The husband is always busy with work, and his wife, Rinrin, leads a cold life... One day, she catches a boy who was ordered by bullies to shoplift! When she interrogates him in the back room, the timid boy only cowered, eventually arousing Rinrin's sadistic tendencies. She then takes his virginity, claiming it as 'compensation for the theft,' but unconsciously, she cannot suppress her emerging sadistic nature...
