Wu Geng, the human prince who has fallen from grace, undergoes the trials of losing his family and becoming a slave in the lowest depths of a mining camp. Despite these hardships, he inherits the will of the former king; he carries a deep-seated hatred for the destruction of his country and people. To improve himself, Wu Geng follows his grandfather and life mentor, Fu Xi, to the hidden village of Shen Yin for training. Overcoming various difficulties and challenges with an indomitable spirit, he embarks on a path of revenge and the pursuit of freedom. Ultimately, he forms a powerful anti-heaven army and goes to the Boundless Domain, putting an end to the long-standing struggle against slavery.
