That was the first time they met, 5-year-old Fang Zhiyin and 8-year-old Cheng Sixheng. With their soft and creepy voices, they obediently called him Brother Sheng. This scene had appeared in his dreams many times. His 20th birthday was a day he would never forget. She became him that night. He went to study abroad, but he received the news of her death. When they met again 6 years later, there was a figure like Satan standing next to her. All her smiles and all changes were for the man beside her. She pressed forward step by step, ruthlessly fierce. It was like a knife piercing his heart, and her indifference made him feel so heartbroken that he was about to die. Is it redemption or sinking? Can the conspiracy again and again allow them to find their past?