Sui Tsukinoe lives peacefully with her fiancé while they run a café together, but a class reunion brings her face-to-face with the ex who once trained her as his sex slave and master. She believes that life is over now that she has a partner, yet her body still remembers his stimulation. He suddenly forces her into deep throat while their old classmates are nearby, then lures her to a hotel by calling it an after-party. Slaps, spanking, hard sex, and merciless creampies restore the humiliating conditioning she thought she had escaped. Ordinary gentle sex can no longer satisfy her; she once again submits completely as his degraded sex toy.