Recounts the true story of the 2005 rescue of a humpback whale that nearly drowned after becoming entangled in crab trap lines off the coast of San Francisco. On a cool December morning near San Francisco, a distress call was radioed to shore by a local fisherman. He had discovered a humpback whale tangled in hundreds of yards of crab-trap lines, struggling to stay afloat. A team of volunteers answered the call, and four divers risked their lives to rescue the enormous animal. It was the first successful whale disentanglement performed off the West Coast of the United States and prompted a rare and remarkable demonstration of animal behavior.