CAPTAIN UNDERPANTS returns! When we last saw our heroes George & 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 & his time-travelling hijinks prevented George & Harold from creating Captain Underpants in the first place! Now having changed the course of human history for ever they'll have to figure out a way to CHANGE IT BACK. Could this be the end for Captain Underpants?!!