Assassin's Creed 4; Black Flag Episode 13: We Demand a Parlay

While staying in Nassau, Edward witnessed the arrival of the British Navy and Woodes Rogers, who come to offer the King's pardon to all pirates.
Hoping to escape Nassau, Edward and Charles Vane devise a plan for which they will need gunpowder.
After learning that Commodore Peter Chamberlaine planned to destroy all the pirate ships in Nassau's harbor, Edward decided to eliminate him.
Edward and Charles Vane set their plan in motion and prepared to escape Nassau.