For nine long years, the dynamic between them remained completely unchanged: Choi Yeonghyeon was the ruthless, unpredictable delinquent, and Lee Minwoo was his submissive, personal toy. No matter how volatile Yeonghyeon’s moods became or how cruelly he pushed boundaries, Minwoo always obeyed with a gentle, compliant smile. This toxic game, which had steadily consumed their youth since middle school, finally reached its breaking point. Deciding he had grown bored of the arrangement, Yeonghyeon abruptly declared an end to their twisted relationship. However, he gravely overlooked a crucial piece of the puzzle. The realization hits him too late when he wakes up bound and trapped inside a locked, unfamiliar room. Staring into the eyes of his supposedly docile captive, a terrified Yeonghyeon is forced to face a horrifying truth: he was never the master of this game. In reality, he was Minwoo’s personal toy all along.