'Just to get this straight . . . There were four angry aliens coming after us who had: a) zombie super-strength b) ginormous razor-sharp scorpion tails and c) a hankering for human hand rolls. Just another fun-filled day in The Alien Zoo.' A dead grandad. A secret Alien Zoo. And only two kids to save humankind from total extinction. What could possibly go wrong? Funny, mysterious and a little bit rude - hold on to your hippos and come back inside The Alien Zoo.