Su Suisui grew up in the Jing'an Marquis Manor. In her childhood, she chanced upon the projection of her master, Su Yunci, and secretly mastered various skills. After Song Mingzhu appeared with the token for recognizing family roots, Suisui overnight transformed from the marquis manor's heiress into a 'fake heiress' questioned by everyone. However, the ancestral mirror's blood recognition, the ancestral mirror's abnormal movement, and the withered well's seal successively revealed flaws. She joined forces with Xiao Chengyan to investigate the case, breaking the deadlock with copper coins and tracking the killer through mystic arts, gradually uncovering the truth about the swapped token and her birth identity. Facing schemes and partiality, Suisui never endured it, fighting back and breaking the deadlock all the way to claim justice for herself.