In order to raise her mother's huge medical expenses, ordinary girl Lin Chuxia signed a marriage contract and married the richest man in the city, Gu Chengze, in exchange for one year's status as "Mrs. Gu" and a reward of five million. This loveless transaction began with an exchange of each getting what he wanted, but it quietly changed in the step-by-step performance.
During the silent wedding night, the cold ban on the restricted area of the villa, and the tit-for-tat confrontation between the Gu family, Lin Chuxia always abided by the agreement, playing the role of a loving couple in front of others, but keeping a distance from Gu Chengze behind the scenes. However, when she accidentally broke into the study, she discovered that she looked exactly like Bai Yueguang and Su Wanrong in Gu Chengze's heart. It turned out that this marriage was just an obsession with a substitute.
Faced with Gu Chengze's indifference and alienation, her half-brother Gu Chengxuan's provocation and difficulty, and the potential threat of Su Wan's return, Lin Chuxia endured her heartache and stuck to the contract framework step by step. But when she gradually saw the fragility under Gu Chengze's cold shell, she had to face the cruel truth of the "substitute". Will this transaction in the name of love evolve into a two-way redemption, or will she completely fall into this deep love puzzle?
