Black Sails Season 1 sets a gritty, realistic tone for a series that serves as a prequel to Robert Louis Stevenson’s classic novel, Treasure Island . Set in 1715, it follows the feared Captain Flint as he hunts the ultimate prize—the Spanish treasure galleon Urca de Lima —to ensure the survival of the lawless pirate haven, Nassau. Plot & Core Themes Black Sails (TV Series 2014–2017) - IMDb