Mandy Hope, visiting Baffin Island with her veterinarian parents, does her best to help when Nanook, the lead dog on the three-day sled trip she is taking with her dad, is injured in a fight with a wolf.
Mandy and James are invited to watch Society for the Prevention of Cruelty to Animals (SPCA) inspector Danny Davies do his job at an SPCA hospital, but the week goes differently than planned when Danny's own dog, Sasha, is critically injured.
Traveling in the Scottish Highlands, Mandy rescues a Dales pony named Jewel who's been caught in a farmer's pumpkin patch. After meeting Jewel's owners, Mandy helps the pony overcome a fear that prevents her from competing in shows.
While her parents treat an injured fox in their veterinary hospital, Mandy cares for the fox's cub and tries to stop a farmer from setting steel traps and organizing a fox hunt.