Age of the Three Kingdoms. Without the king's knowledge, Commander Zi Yu challenged General Yang to a duel and captured and held the city of Pei State. Because of his willfulness, the commander falls into disfavor with the ruler and loses his privileges, but he does not abandon his scheme. Only the wife of the dying Yu knows that the Shadow, a specially trained double from childhood, has been acting instead of her husband for a whole year, and Yu himself is locked up and making devious plans.