What happens when you accidentally drink a super secret super power potion? You get super powers of course. But what happens when a bunch of grumpy adults get super powers too? Supervillains of course. Can Bart save the city from the supervillains? Can he keep his super powers secret from his best friends? And why does his dog eat his barf? We may never know why his dog eats barf, but you'll probably find out if Bart can battle supervillains and keep...