Ling Han, a mercenary with a death contract, keeps his mother alive with the life-sustaining pills he exchanges for each mission. When the final mission pointed to his brother Ling Chen, he resolutely chose to betray the contract and lead his family on the road to escape. With the assistance of their former comrades-in-arms and the police, they worked together to destroy criminal organizations, eventually pushing for legislation prohibiting coercive contracts, and tearing open the rift of the Dark Ages with flesh and blood.