"Yan Zhi Zhai" is a story of rival clans, martial arts, secret techniques, and the struggle for power. One of the most ruthless criminals, Boye Jinsin, not only destroyed his entire clan but also killed his teacher. He is the only person in the world who possesses the knowledge of the Sutra of the Day Heart, which is unbeatable. Master Jiang managed to capture Boye, who turns out to be a woman. Wanting to obtain her incredible skills, he decides not to kill her but to imprison her in a metal sarcophagus. After 11 years, Boye escapes and seeks revenge, not against the master, but against his son.