One of the funniest and most engaging authors on the planet’ Anthony Horowitz Can a dog from outer space save the world? When Prez meets Sputnik – a small, loud alien – he's shocked to hear that the world is about to be destroyed. Unless Prez can show Sputnik ten things worth seeing or doing on Earth . . . But Prez's list of amazing things is not quite the same as Sputnik's – will it be enough to save the planet?