The top modern killer Ye Zheng traveled through time and became a stupid prince who was about to be deposed. The princess is an enemy spy, the court is controlled by treacherous officials, and southern Xinjiang is pressing harder to annex Daqian. Facing the 500-step archery in the school field, he took out a compound bow and taught the soldiers to hit with one arrow. The enemy forced him to fish for boiling oil with his bare hands, but he used saltpeter to turn water into ice with his backhand, which shocked the audience. On the fighting field, he made up for his mistakes and crushed his opponents with his talent. Ye Zheng did not rely on indiscriminate killing, but only relied on wisdom and knowledge to overcome obstacles, conquer people's hearts, develop firearms, and step by step counterattack from the edge of being abandoned to become the backbone of the court, finally regaining the lost ground and firmly establishing himself as the prince.