Kat helps her dad run the Crumbling Arms Inn in the Scottish Highlands, but her real passion is animals. In their wildlife sanctuary at the back of the inn, she and her dad look after everything, from donkeys to tarantulas. Now they've given a home to their most unusual animal yet: a cute little wallaby called Wilf. He's a real character and soon has tourists flocking to see him. Then Wilf is kidnapped and Kat is furious. And when that happens, look out world!