Agent Bai Changning transmigrated to become the humiliated legitimate daughter of the Bai family, and just as she woke up, she encountered her fiancé Liu Ci publicly breaking off the engagement. Bai Yurao feigned gentleness while repeatedly harming her behind her back. She tore off the white lotus disguise, exposed the scars to hammer down the incriminating evidence. At the critical moment, the mysterious evil king Fuyang Chi, afflicted with gu poison, appeared to save her. Bai Changning is not afraid of imperial power, manipulating the evil king's gu poison with medical skills, and the two reached a deal. Borrowing the prince's power, she intelligently fought the stepmother in courtyard battles to counterattack, publicly tore up the humiliating engagement contract, and broke with her hypocritical native family. Under the strong-vs-strong game, the female lead step-by-step breaks the deadlock, winning a new life for herself amidst political scheming and calculations.