After a battle with the Kraang, the turtles discover a weapon being forged that can change the entire history of the Earth. With their luck, the four accidentally fire the weapon and it transports them into year 1760, where each brother does not remember their old lives, only the modified ones. Even their personalities change: Leonardo becomes a pirate, Raphael is a Bounty Hunter, Donatello a weapons smith and Michelangelo a stable hand. Slowly, the four reunite and they assemble a crew to take back the mythical Black Pearl, who is currently controlled by the cursed Oruko Saki. Will they survive the suicidal mission? Will they claim the Black Pearl? Will Donatello find love? Read to find out, DUH!