The film is set in Flower Capital, a land ruled by an evil queen (Qu Ying), who started hating men after her lover, High Priest Wei Liao (Daniel Wu), betrayed her. All men in the kingdom are slaves to women. However, a prophecy foretells that one day, the Star of Rex will find and wield a mythic sword, rise to power, overthrow the queen, and restore the balance of the two sexes.