When the police found Cheng Xiaoxiao, she was in a white dress, her face streaked with tear tracks. Her boyfriend, Li Yang, was just in the room separated by a wall, kneeling on the floor with a ghastly face, a knife plunged into his abdomen, already breathless. The initial judgment suggests it was suicide. During the investigation, the police started to suspect Cheng Xiaoxiao. Under her seamless testimony, the police were left helpless. As a video emerges, the truth gradually comes to light. Cheng Xiaoxiao had nowhere to escape and received legal sanctions. But... this isn't the ending she deserves.