The Xingluo Dynasty was founded on the Mandate of Heaven, and the Star Orbit Bureau controlled the fate of the nation. Twins were regarded as “disaster stars brought into the world.” In the depths of the Hidden Palace, bronze chains wound around the skeletons of twin princes from generations past. Above the Hall of Supreme Harmony, the bloodstains left by the Star Orbit Bureau’s “engraving of the Mandate of Heaven” were reflected on a gilded dragon throne. On the night the late emperor died suddenly, half of a charred edict fell to the ground. The words “Hidden Palace” tore open a century-old dynasty’s lie. Shen Yan, the Third Prince whose left eye had been gouged out, and Xiao Heng, the Crown Prince who wielded a sword carved with purple-and-gold dragon patterns, were brothers whom the Star Orbit Bureau had foretold would be “twin disaster stars.” Before the imperial bed, they began a deadly struggle over bloodline, power, and truth.