Ever since Sammy discovered that there are crazier animals in the world than just lemurs and lions, his life has become pretty weird. So when a Mongolian Death Worm turns up at his zoo, he’s not that surprised. The Death Worm needs help: his best friend, Bert the Yeti Chief, has gone missing. <br><br> Can Sammy summon the Ministry of Yetis and rescue Bert? He’s going to need help from his old friends Donny and Red, not to mention a very reluctant Wish Frog . . .