On a rainy night, 300,000 yuan in medical expenses pushed Su Wan into a desperate situation. Her father slapped her in the face and said "Your mother's life depends on your thoughts", forcing her to sign a contract of prostitution - to replace her sister Su Qing and marry the rumored bloodthirsty and ruthless wealthy CEO Li Sijue, becoming his substitute for Bai Yueguang Lin Weier.
Wedding night is hell. The new house looks like a cold mourning hall, with Lin Weier's portrait accompanying her everywhere. Li Sijue pinched her chin, his eyes filled with ice: "Fake, you only deserve to imitate her." The strict "substitute code", ubiquitous surveillance, extreme morbid control and mental humiliation were her daily purgatory. If something goes wrong, the pain of the ice silk whip will penetrate deep into the bone marrow. When she finally gave up, she planned to fake death and escape with the broken body and mind after the miscarriage, thinking that she would be reborn...
Four years later, "Eileen Su", a cutting-edge designer who shone brightly in the international show, was caught off guard and ran into Li Sijue's scarlet and crazy eyes. He laid a dragnet and vowed to lock the reborn prey back into the golden cage: "The game is over, my substitute wife." However, when the sordid truth about Lin Weier's death tore apart the disguise, when he collapsed and self-destructed while kneeling in the heavy rain when she was in danger, when the two-way "prisoning of the heart" became fate - in this gamble that started with a substitute marriage and ended with heart-burning sadomasochism, who is whose salvation? When the substitute tears off the disguise, who has imprisoned whose heart?