In a world of Men of Steel, Men without Fear, Scarlet Speedesters and Gods of Thunder, someone like Derpy Hooves doesn't really measure up. Until she stumbles on a seemingly ordinary looking rotary phone dial, but by dialling the code H-E-R-O into it, Derpy gains the ability to transform into a random superhero, complete with name, costume and those sweet powers. But, as always, with great power comes great responsibly and Derpy has to learn that fast, all the while trying to protect the ones she cares about.