The last time we saw them, George and Harold had transformed into gigantic nerd zombies, doomed to wander eternally on a desolate, post-apocalyptic planet. You might wonder why Captain Underpants didn't save them from this horrible fate. Because Pippy Poopypants and his time travels prevented George and Harold from creating Captain Underpants in the first place! Now, having changed the course of human history forever, they must find a way to CHANGE IT AGAIN!

INCLUDES FLIP-O-RAMA, a groundbreaking world-renowned technique that allows you to bring action scenes to life!