When we last saw our heroes, George and Harold, they had been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic 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.

La ltima vez que vimos a nuestros h roes, Jorge y Berto, estos hab an sido convertidos en zombis destinados a deambular por toda la eternidad en un planeta destruido. Pero, por qu raz n el Capit n Calzoncillos no salv a los chicos de ese destino? Para empezar, el profesor Cacapip y sus alocados viajes en el tiempo impidieron que Jorge y Berto crearan al Capit n Calzoncillos