The Pequod, commanded by peg-legged Captain Ahab, sets out on a whaling voyage. While the crew, a mixture of nationalities, races, and religions, diligently hunts whales, Ahab stays below deck, emerging only to announce that the real purpose of the trip is to kill Moby Dick, the white sperm whale that tore off his right leg. Once sighted, the whale draws Ahab and the crew into a final battle.