A powerful underground crime boss reunites with his wealthy former lover under the guise of debt collection. Three years ago, they were torn apart by forged evidence and cruel manipulation from a possessive half‑sister. Trapped in a high‑stakes game of mutual misunderstanding, the two engage in tense mind games, testing each other’s lingering affection amid power imbalances. As hidden old clues gradually surface, they dig into the truth behind the cruel betrayal. Both men must confront past wounds, break cycles of control and suspicion, and unlearn old toxic dynamics. Ultimately, they abandon master‑servant patterns and choose equal, sincere love instead of obligation or repayment.