Zack Freeman is back. . . And so is his bum. Aided by little more than a squeezy bottle of tomato sauce, a rudimentary grasp of the hokey pokey and three of the oldest bum-fighters on the planet, Zack and his bum are fighting to protect the Earth against an invasion of some of the smelliest and most dangerous bums ever to pollute the universe: zombie bums from Uranus! Be bold, be brave, be entertained beyond your wildest dreams in the heart-stopping, nostril-blasting, zombie-bums-from-Uranus-filled sequel to The Day My Bum Went Psycho.