Blacky the farting dog has a mission that Marcus and Dylan can't refuse. Trouble is, this mission involves a monstrous saltwater crocodile who would much rather chomp on a human for dinner than have a civilised conversation. Of course, there's also the small matter of a giant big-game hunter on a collision course with our heroes. And will Marcus be any match for his mean older sister Rose and her sabre-wielding best friend Cy Ob Han? Blacky, the master of disguise, is back, full of attitude and smelly as ever.