When Max's grandmother invites Max and Sarah on a trip to see real beluga whales, they can't believe how lucky they are. They get to travel on a research boat and meet the St. Lawrence River belugas face-to-smiling-face! Then they hear about an orphaned beluga in trouble. A dam is being built across the small river he is living in. Can they help the researchers save the young beluga before he's trapped there, alone, forever?