George & Harold (the co-stars of the enormously popular Captain Underpants series) are in big trouble again! Their mean principal Mr Krupp has had it with their comic books But the boys aren&t giving up & they decide to create an all-new epic novel about a subject they&ve never tackled before! Dr Dilbert Dinkle started his career as an ordinary everyday evil geniusinventorbank robber But when he awakens one day transformed into a walking talking puddle of pee he vows to destroy every toilet in town Will the devious Dr Dinkle & his conniving cat Petey ruin restrooms for the rest of us? Or could this be a job for the death-defying dynamic duo of Super Diaper Baby & Diaper Dog?