Rejected by the new girl, DIANE FRAZIER, because of his enormous size, 12-year-old NEEDHAM GENTLY eats a mysterious burger, and overnight, miraculously loses all of his weight. Soon, strange thing begin to happen in town: kids go missing; adults begin acting strangely; and worse still, Fatty Frank’s Burger restaurant inexplicably blows up.
It is only when Needham he is captured by a monster living in his toilet, DÉJÀ POO, and taken to the Bland Sewerage Works does he learns the awful truth – children are being farmed to make T.U.R.D. BURGERS by an evil fast food company, UNI-FLAVOR INDUSTRIES. However, the scientist behind the project, THE PROFESSOR has other plans. Working with Déjà poo, he turns Needham into a Multi-Bum Monster to extract his Dark Matter for The Great Flush Apocalypse – the end of the world. But Needham escapes and unwittingly transforms Déjà poo into an enormous OCTOPOO. The monster escapes and charges for the largest sewerage farm in Australia to become even bigger. Needham flies after it while Diane his friends try to stop trucks full of T.U.R.D. burgers reaching Melbourne. Needham kills Déjà poo by blasting it into a wind farm. However, infected by the monster, Needham ends up sucking his friends into his very own black hole and into another space-time dimension.