Reborn back to the day when my younger sister is obsessed with the scumbag crown prince, Shen Changyuan activates the love-brain system: if my sister's love-brain meter is full, the whole family dies! Making a venomous oath, if she dares to throw herself at the tyrant, I will snatch away the crown prince's white moonlight Gu Qing'er! A lunatic elder brother, a love-brained younger sister, a clear-headed talented woman, and a hypocritical crown prince engage in court power struggles, rewriting the bloody destiny of a full-family execution!