Security guard Li Jianguo suffered from lung cancer when he was 60 years old. He was betrayed by his wife Zhang Hui and his stepson, who took away all his property. When he was about to die, Li Jianguo accidentally bound to the Perfect Life System. As the mission progressed, his tumor completely recovered. He slapped Zhang Hui and her son many times in the face and successfully regained his property. Not only that, he also conquered the bosses in the underground world and became a billionaire.
