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The Polar Bear Alert Team releases a bear back into the wild only to find another bear dangerously close to town. Meanwhile, the veterinary team removes a cancerous tumour from grey wolf Onyx.
When polar bear Baffin needs an emergency root canal, Dr. Chris and the team call in veterinary dental expert Dr. O'Morrow, who races to finish the surgery before the anesthesia wears off.
Snow leopard Batu suddenly stops breathing while Dr. Andrea performs surgery. In Yukon, an injured baby lynx is reunited with its family with the help of Dr. Chris and new intern Dr. Shannon.