The man, who appears to be a gentleman working at a major trading company, decides to meet a big-breasted girl he found on a matching app. After the dinner, he invites her home, easing her guard with gentlemanly behavior and sincere talk, then secretly mixes an aphrodisiac into her tea to make her fall asleep... When she wakes up in a daze, her body is deprived of freedom with restraints, and a man transformed into a psychopath is smiling eerily in front of her...