Dr. Oakley is called to Quebec to help a team of scientists battling to save a unique caribou herd from being wiped out. To reach their goal, the team needs to capture four pregnant caribou and transport them via helicopter to a large pen where they will stay until their foals are born and old enough to defend themselves. Back in the home clinic, Dr. Oakley reunites with a Lab named Rose for a checkup and what she finds worries her.