Safari World is opening the Arctic Dome to visitors, and Mr Hammond has chosen animal costumes for Andy and Jen to wear while they show people around. Jen informs Mr Hammond and Andy that there is trouble in the Arctic Dome with the walruses not having enough space due to a recent baby boom. Mr Hammond is worried that the walrus pups will get squished and can’t work out why there is not enough space. Andy suggests Mr Hammond goes and entertains the visitors while he and Jen work out what’s wrong. It’s time to go on an aquatic adventure!