Liu Chenghao, a 31-year-old delivery boy, whose already tight life completely collapsed after a car accident. Both legs were amputated, and his wife remarried someone else with their children. He lay on the hospital bed, facing emptiness and despair, feeling that he had nothing left. However, fate took a turn at this time. Two men in black suddenly appeared, representing a mysterious national research agency, and recruited him to participate in an experiment called "Project X." With no way out, Liu Chenghao nodded in agreement, but he didn't know that this would be the starting point of his rebirth.
