Miyo, who lives a happy life with her husband despite being ordinary. Suddenly, Ryuzo, her brother-in-law who was serving a prison sentence for attempted murder, came to visit. He said that he was released but had nowhere to go, so he relied on his younger brother and ended up staying at the couple's house until he found an apartment. Ryuzo, who had been forced to live a life of abstinence for a long time, couldn't stand seeing a woman after a long time and raped Miyo. From that day on, days began where she was tormented by a sense of transgression but surrendered to pleasure…