In her previous life, Yan Qiqi, Princess De'an of the Dongchen Kingdom, was betrayed and killed by her own loved ones. Reborn as Fu Xiaoxiao, the illegitimate daughter of the Yan family of the Yuanling Kingdom, she is a legendary thief who spent sixteen years living outside the family. She storms the family residence to demand justice and pleads her case before the emperor, only to be ordered to return to the Yan family and live there. After moving into the dilapidated Green Bamboo Garden, she repeatedly suffers humiliation and harassment from her legitimate mother and elder legitimate sister. Meanwhile, Crown Prince Xuanyuan Jinghua secretly keeps an eye on her, while the Eighth Prince Tianlan and Ninth Princess Yuqing frequently come to her aid. During a shopping trip, Yuqing is unexpectedly abducted. Xiaoxiao follows the kidnappers into a secluded alley, where she is ambushed and captured. In the dungeon, she encounters a bizarre man in red who practices evil cultivation. With the young women imprisoned there in grave danger, a new conspiracy begins to unfold.