Yueyao (Lin Siyi), a young assassin with amnesia, finally has her first killing mission when she is sixteen years old. Yueyao was ordered by her master to assassinate the "ruthless" general He Yunxing (Li Junchen) of the Fourteenth Yamen. Yueyao failed to sneak into the general's mansion to assassinate, and was designed by He Yunxing to become his newly married bride! In order to complete the assassination mission, Yueyao had to play the role of He Yunxing's newly married daughter-in-law. Soon a series of murders occurred in the general's mansion, and Yueyao became the first suspect of the murder. Under the stimulation of the bloody murders, Yueyao gradually began to recover her lost memory, but at this time she did not know that she had been involved in a shocking conspiracy...