Against his will, fourteen-year-old Joshua sets off from London to Boston in 1732. Filled with fear of the unknown, he boards the Stormbird. However, his fears are trivial compared to what truly awaits him. A storm severely damages the ship, black sails appear on the horizon, and crew and passengers are thrown into turmoil as the captain of the Stormbird decides to fight against pirates. What happens next exceeds anything Joshua could have ever imagined. Suddenly, he becomes a participant in the deadly conflict between two rival pirate factions. A nightmare, if it weren't for his friendship with Jeremiah.