Ethan Cole, the dual hall master of the God King Hall and Kunlun Hall, guards the world and protects the peace of eternity. In order to refine his heart in the mortal world, he chooses to hide in the city and get married, becoming a deliveryman. Because he did not guard the Human Emperor Sword in the God King Hall for a long time, the villain is ambitious and wants to steal the Human Emperor Sword to become the master of the world.