Guyun, the unrivaled Marquis of Wei, broke away from the shackles of his life experience and wanted to live a happy life as a wandering cloud and wild crane. However, God did not obey him. On a trip to the south of the Yangtze River, dark waves surged, forcing him step by step into the whirlpool of conspiracy. When the most free and unrestrained person is gradually captured, when the heart that longs for freedom is gradually conquered, Gu Yun can only smile bitterly, "One wrong step, everything is wrong!"