The female protagonist was framed. She, who should have been the real daughter of the Lu family, was slandered as a fake daughter. She was also replaced by the life-saving grace to the CEO male protagonist, and was sent to a mental hospital for three years of torture. She suffered from Alzheimer's disease and was about to die. After her best friend rescued her, she revealed her physical condition to her brother. The male protagonist also accidentally learned the truth about mistaking her life-saving benefactor. After the truth was revealed, the guilty male protagonist and the Lu family found that the mistake could not be made up for, and everything was irreparable.
