Cooper, as first mate on a slave ship, assumes command when the captain is killed during an abortive mutiny. An abolitionist himself, Cooper sets the cargo free and subsequently allows the ship to be boarded by the crew of a British naval vessel. Cooper and his shipmate and friend Raft
are brought to Liverpool to be tried for mutiny. The case is dismissed for lack of evidence but shortly thereafter Cooper is approached by agents of a naval intelligence agency and asked to help gather information that could put a stop to the slave trade once and for all. Cooper and Raft set sail
on another ship, bound for America, and each falls in love: Cooper with Dee, whose offic...