The real princess Su Zhiwei was reduced to a maid in the Xie Mansion, and was mistakenly identified by the powerful minister Xie Jingyuan as her late sister Xie Heng. She deliberately imitated her, but found that her birthmark was the same as Xie Heng's. Knowing that Xie Jingyuan was the mastermind of the change, she forced him to admit his mistake within seven days, but he did so in a heartbeat. She tore up the marriage contract and left. The maid died suddenly and the princess returned to her throne.
