In 1920s China, 19-year-old Songlian becomes a concubine of a powerful lord and is forced to compete with his three wives for the privileges gained.
Crown Prince Wu Luan is in love with Little Wan but left heartbroken when she marries his father, the emperor. The emperor's brother, Li, kills him and Wu Luan tries to avenge his father's death.
A mischievous snake who assumes human form interferes with the romance between her reptilian sister and a hapless man.