Maniacs in the Fourth Dimension

The story follows a group of fanboys and fangirls gathered on the annual 'Convention-Con' ( a parody of Comic-Con), who are about to meet the author of their favorite comic. Comic is titled '365 heavens', and explores the old Gnostic teaching, that the universe is actually made out of 365 levels of existence. Once they meet the author, he convinces them that the story of the comic is in fact true. The visible world in which we exist is actually the lowest of realms. He himself is a multidimensional being, having crossed multiple dimensions. He proves to them the truth of his claims by hurling them all into the fourth dimension, and rushes them into race with time, to save, of course, the world.