"That taste of you back then... it was delicious." Airi, now living with her fiancé's family, discovers that the man who once assaulted her is actually her fiancé's older brother. She had moved away to escape the trauma of being drugged and repeatedly raped, but this unexpected reunion fills her with deep, paralyzing fear. As she stands trembling and helpless, the depraved brother-in-law approaches. "Fate has brought us together again. Who would've thought my personal sex pet would become my sister-in-law?" For this despicable man, violating Airi over and over remains his only purpose in life. Trapped with no way out, Airi finds herself unable to escape his control.