This mechanic from another world has carved his own legend in the world of superheroes. He's an "interesting colleague" in Iron Man's eyes, a "mechanical master" admired by Spider-Man, and a "mechanical tyrant" feared by villains. As his abilities evolve, Qin Feng gradually discovers that he's awakened not only the skills of a mechanic but also a power capable of changing the world. Amidst the battle between the Avengers and the forces of darkness, this time traveler, bearing the mark of DNF, is composing a new heroic epic with gears and electricity.