Su Cheng is unexpectedly reborn in a parallel world. As long as he completes missions, he can transform into a superhero from a certain comic-book universe.
At the opening ceremony, a monster rhinoceros suddenly appears, and the world enters the Monster Era. War between humanity and the monsters is on the verge of breaking out.
To protect humanity's peace, the Hulk bats the rhino monster away with one hand, Spider-Man swings among the skyscrapers, and Ghost Rider rides his skull-faced Harley through the night...
Then, just as the monster army launches an all-out assault on humanity, every hero disappears.
Only then do people realize that the superhero who had been protecting Earth all along was the same person from beginning to end.
That person is... Su Cheng!