In the late Shang Dynasty, Su Daji orders the deaths of the entire family of General Situ Ji, who is a threat to her. Bi Gan, Jiang Ziya, Huang Feihu, Bo Yikao, and other loyal and upright people want to protect Situ Ji’s son, the sole descendant of the Situ family. He and his mother are sent to live among common people, and he is named Yunyan. Then, over the following 10 years, the loyal and upright people keep risking their lives in trying to assassinating Su Daji, but they never succeed. Su Daji finds out that Bi Gan and others are the masterminds. So she imprisons Jiang Ziya, and persecutes Bi Gan. Before Bi Gan’s death, he finds Yunyan, and hopes that Yunyan can kill Su Daji and fulfill the mission of saving the Shang Dynasty. However, at this time, Yunyan is a cynical and greedy, ordinary young man. Can he fulfill his mission?