The real daughter Song Yao was imprisoned in a lunatic asylum for half a year by her three brothers because of a conflict with the fake daughter Song Tong. After being discharged from the hospital, she pretended to be obedient and used "mental illness" as a protective color to fight back against Song Tong and the evil nanny. As Song Tong's conspiracy and the truth about the lunatic asylum are gradually exposed, his brother's favoritism and debt come to the surface, but the broken trust and deep-rooted pain can no longer be smoothed away with a "sorry".
