Zhang Tianbao's family was spared from being exterminated by their enemies, and after years of preparation, he began to seek justice. However, when he went to assassinate his adversary, he encountered his childhood sweetheart, Princess Wang Yufeng, and his biological brother, Wang Renyi. Wang Yufeng remembered her good companion from childhood and had helped Zhang Tianbao out of difficult situations multiple times, but her brother had no memory of his existence and constantly targeted Zhang Tianbao. Zhang Tianbao was reluctant to hurt his brother and sought to trigger certain memories in Wang Renyi. Wang Shichong had ascended to the throne and became suspicious of Wang Renyi, starting to deal with him. Wang Renyi also understood the truth: he was Zhang Tianyong. Just when Wang Renyi was about to be killed, Zhang Tianbao arrived and saved him. Wang Yufeng, feeling disheartened, decided to ordain as a nun.