When the Root Street Gang lose their football in the Kanker & Byle Chemical Factory, Gaz sends his little brother Baz in to get it back. And then they lose Baz. Faced with returning home without his brother and facing his Mam's wrath, Gaz has no choice but to lead his friends Shaz and Damo into the factory to find Baz and their football. But this is no ordinary factory, and in no time at all, Gaz, Shaz and Damo are up to their necks in trouble. In their quest to find Baz, they encounter the living dead, giant insects, and a man with the most disgusting job in the world. But there is an even worse fate awaiting them at the end of their search...