Unexpectedly reborn as the Kangxi Prince Yinfeng, Zhang Xian faced the cruel chess game of Kowloon to win the heir - surrounded by princes, betrayal by courtiers, jealousy by the emperor, and his past arrogance put him in a desperate situation. Relying on his modern mentality and insight into the situation, he lay dormant and fought against all forces, vowing to break out of the desperate situation and reach the top of power.