Fang Xu, the first wife of the Marquis of Yongcheng. She devoted herself body and soul to her family—only to meet her end on the night of her own birthday, brutally murdered at the hands of the children she loved. Why did I have to die? In her fading consciousness, she learns a horrifying truth: the children she raised with her own hands were fakes, born of the concubine's bloodline. And her true child had been cruelly oppressed in the shadows all along. At the depths of despair, she travels back in time and awakens on the eve of the tragedy. To take revenge on the family wearing perfect masks, what beautiful yet madness-filled trap will she set?