Arisa married her husband two years ago and lives with her stepson Taichi as a family of three. One day Taichi brings two of his friends over to their house. The friends, noticing Arisa's beauty, threaten her, asking, "Do you want Taichi to be bullied?" and play with her body. The two get a taste for what they do and come back later to attack Arisa again. They tie up Taichi, who is there, and strip Arisa naked in front of him...