Zhang Xin'er (played by Guo Caijie), a young girl, accidentally saw the murder scene of her parents being shot when she was ten years old, and she was deeply traumatized. This painful memory that can never be erased accompanies her growth. Entrusted by Zhang Xin'er's guardian counselor Liu Mei (played by Liu Xuehua), the famous biological scientist Professor Dong (played by Guo Jinglin) helps her reshape her memory and cut off the pain by cutting her memory. The originally smooth memory cutting experiment, but accidents and out of control occur one after another. When the truth continues to surface, how will Zhang Xin'er face all this in the end?