Her husband has become addicted to virtual currency and fallen into huge debt. The yakuza he owed money to takes his wife, Saki, as collateral. Saki is taken to an inn run by the yakuza, where she is humiliated and violated over and over again.
The yakuza tries to woo her, telling her that she's a good woman, but when Saki firmly refuses, he becomes annoyed and repeatedly cums inside her and rapes her dozens of times. Her vagina becomes so full of sperm that when she presses her stomach, sperm comes out like toothpaste... Gradually, her brain starts to loosen up and she becomes a completely lewd woman.