Qin Wanyi is the true daughter of the Qin family. After getting lost as a child, she was adopted by the master of the Xuanmen sect. Thanks to her extraordinary talent, she eventually surpassed even the sect's founding ancestor. Before his death, the ancestor entrusted the Xuanmen sect to her, but told her that she was still one step away from attaining true immortality because she had lost two of her seven souls. One was in the Qin family, and the other was in the Fu family. Qin Wanyi returns to the Qin family, only to discover that the Qin and Fu families have an arranged marriage agreement. Her parents favor their adopted daughter, Qin Wanning, and cannot bear to let her suffer by marrying a man in a vegetative state. So they propose that Qin Wanyi take her place in the marriage.