When we last saw our heroes, George and Harold, they had been turned

When we last saw our heroes, George and Harold, they had been turned

into evil zombie nerds doomed to roam a devastated, post-apocalyptic

planet for all eternity. But why, you might ask, didn't the

amazing Captain Underpants save the boys from this frightening

fate? Because Tippy Tinkletrousers and his time-traveling hijinks

prevented George and Harold from creating Captain Underpants in

the first place! Now, having changed the course of human history

forever, they'll have to figure out a way to CHANGE IT BACK.

Could this be the end for Captain Underpants?!!