Dr. Chris heads to Churchill, Manitoba, for the dramatic rescue and release of a wild adult polar bear; an 800-pound musk ox in urgent need of a hoof trim wakes up mid-procedure; Storm the rescued polar bear struggles to walk.

Former movie wolf Gambit isn't eating; on the tundra, Dr. Stephen gets between an aggressive male polar bear that threatens another momma bear and cubs; Jackie and Heather investigate a rescued polar bear's injured paw.

A new intern operates on a rescued peregrine falcon with an injured beak; Dr. Stephen and C-Jae investigate mysterious scars on injured belugas in the wild; Heather spots a troubling dental issue with a polar bear cub with broken teeth.

Dr. Chris is back working with the Polar Bear Alert Team to prevent polar bears from getting too close to the town of Churchill, Manitoba; he heads to the Canadian Polar Bear Habitat in Cochrane, Ontario, to treat a bear with an injured elbow.

The team must remove a cyst from the eye of an arctic fox; a new research project designed to help polar bears; the rescue and release of a great horned owl.

It's intern vet Whitney's busiest day yet when she works with Doctors Charlene and Chris to remove tumours on two rescued grey wolves.

Onyx, the only female in Assiniboine Park Conservancy's pack of rescued wolves has a mass on her mammary gland; Dr. Chris and the vet team must rush to remove it.

Dr. Chris is called in to cure a bumblefoot infection in a wild trumpeter swan; Dr. Whitney treats deep scratches on Emile the seal; Dr. Charlene rescues three burrowing owls.

The Conservancy's youngest polar bear gets neutered so he can safely join his fellow bears. Meanwhile, Jackie must say goodbye to the seals, polar bears and her best friend and colleague, Heather.