Robert Blood, son of the great Captain Peter Blood, is restless to go to sea when his mother finally gives her consent. Robert is assigned a ship. On board he meets a beautiful young damsel named Abigail. At sea their ship is attacked by the pirate, Malagon, and they are taken prisoner. Malagon is an old enemy of Captain Blood and delights in mistreating Robert. With the help of some of Captain Blood's former shipmates, who are now part of Malagon's crew, Robert takes over Malagon's ship. Now captain of a pirate ship, Robert and his crew come across a slaver ship and rescue some of Robert's servants who have been taken to be sold as slaves. Robert and his men return to his native Jamaica to battle the corrupt authorities. As Robert and his crew win their fight, the 1692 Jamaica earthquake and tidal wave strike the island. Robert and his men rescue his mother and others trapped in a church in Port Royal. They all survive. In the aftermath, Robert and Abigail are set to marry and live happily ever after.