In 1754 a British gentleman, Haytham Kenway, kills a man at the opera in London and carries a stolen key to the American colonies. He is a Templar. His son, Connor, grows up to become the Assassin who hunts him across the American Revolution — through the Boston Massacre and the tea ships, the first shots at Lexington, Bunker Hill, Valley Forge, Monmouth and finally New York.
Assassin's Creed III builds its America from real maps, and almost every stop can still be walked: the opera house in Covent Garden, the Old State House and Boston Harbor, the green at Lexington and the bridge at Concord, the Bunker Hill battlefield, the Valley Forge encampment, the Monmouth battlefield, and the Battery at the foot of Manhattan, where the war ends.
In 1715 a Welsh pirate kills an Assassin, steals his clothes and his name, and ends up sitting in his place at a meeting of Templars in Havana. That is how Edward Kenway enters the Golden Age of Piracy: he takes a ship, the Jackdaw, builds a pirate brotherhood in Nassau, loses his friends to the gallows and to each other, and spends the rest of the story chasing a device called the Observatory that can watch anyone on earth.
Black Flag sets all of it in real ports — Havana, Nassau, Kingston, Port Royal — and then leaves the Caribbean for the Maya ruins of Tulum, an island in the Gulf of Guinea and a final scene in London. The route follows Edward from the harbour where Torres's plot starts, through the pirate republic and the governor who ends it, to the Kingston house where Mary Read drops the disguise, the jail at Port Royal, Príncipe, where the Sage is waiting, and Covent Garden. Most stops mark a real landmark in the town the game rebuilds.