The Emperor's Secret Heir

Emperor Zhao Qian discovers the Crown Prince is not his son, but the product of an affair between Noble Consort and his brother, Zhao Yan, plotting usurpation. He feigns abdication to the false prince, grooms his true heir. During the abdication ceremony, Noble Consort, Zhao Yan, and the false prince confront him. Zhao Qian summons his true heir for a blood-paternity test, capturing traitors. A showdown for the throne.