Believing the Turtles can accomplish so much more for the city, and inspired by iconic superhero Silver Sentry, Michelangelo decides to take a crack at being a superhero. But he soon discovers superheroism is not all it's cracked up to be. Worse still, he stumbles upon a mind-control experiment by Silver Sentry's arch nemesis Malignus and ends up battling for his very life against the Malignus-controlled Silver Sentry.