Chisato Shinohara, a slender office lady with beautiful breasts, engages in a dangerous game. On her way home from work, she receives a sudden phone call summoning her. Waiting for her are two men: her department chief and a junior colleague. Determined to relieve the stress of her job, she confronts the situation head-on. Her submissive desires are awakened, soaking her panties. Then comes the shocking truth she discovers—its revelation will drastically change her life forever.