*Treasure Island meets Doctor Who in this incredible voyage - as the Eleventh Doctor (Matt Smith) takes to the high seas!* Summoned to 1700s Plymouth, the Doctor and Clara investigate mysterious thievery from the Crown of King George. A new wave of pirates are stealing "extremely precious cargo", and the Doctor sets out to the high seas to uncover it. As the mysteries of the cargo are unearthed, the Doctor has a choice; betray the King, or walk away. Will the Doctor commit the ultimate pirate betrayal: treason? Alien pirates, shipwrecks and an ancient order of sea-faring friends abound in this incredible romp across the wonders of the universe, earth and sea.