Sakura lives with her kind husband, but her father-in-law develops a back injury and the couple ends up taking care of him for about a week. One day, she is offered some tea brewed by her father-in-law, and when she drinks it, her whole body goes numb and she is unable to move. Unable to resist, her father-in-law rapes her, but the pleasure she has never felt before makes her move her hips against her will and she climaxes...