Mai, a beautiful paralegal at a law firm, is highly capable and strongly justice-driven, earning the trust of her lawyer, Nakata. One day, a man named Kita, who runs a loan shark business, forces an unreasonable request upon her, and when she refuses, he assaults her. When she consults Nakata about it, she learns that Kita was Nakata's leverage. Kita returns with his underlings, and Mai manages to fend him off. In her despair, her perverse nature blooms, and eventually, in front of her fiancé, she is subjected to continuous breeding, reaching climax...