At Animal Ark, Mandy Hope helps her parents treat animals of all shapes and sizes. Even outside the clinic, Mandy can't resist helping any animal in need. While staying on Baffin Island, Mandy and her parents enjoy the thrill of a dogsled ride. Wolves attack one of the husky teams and the lead dog, Nanock, is badly injured. Mandy helps move him to a secluded hut, but can the rescue party get to Nanook in time?