With a single contract, she became the business tycoon's "contract lover," enjoying every night of his love and daily indulgence. He said, "It's just a contract, no emotions involved." But he made exceptions for her. From a socially humiliating joke to a rising star in the business world, she transformed the world with her own hands. But just as her heart was moved, the truth came crashing down—was he the mastermind behind her father's bankruptcy? At this moment, a gentle man approached her: "If you don't love him, I'm here." She looked back at the cold man who had given his all for her—who would truly be her true love? A tangle of love and hate, endless twists and turns. A single contract placed all her fate on the line.

To pay off a debt, the heroine is forced to marry a ruthless mafia godfather. On her wedding day, her escape attempt fails, and she is imprisoned in a luxurious cage. The godfather declares, "You can't afford the price of escape." Undeterred, the heroine secretly contacts a police informant (the gentle male lead). The leader of a rival family (the sinister male lead) seizes the opportunity to sow discord and seize her as leverage. Extreme pursuit entwines with forbidden desires.