Twelve year olds Sam Skull and Katy Crossbones captain a crew of misfit children in the 1700s. Branded pirates by the British government, the kids sail the seven seas in search of adventure and, of course, mountains of treasure. Hot on their stern sails a mix of the most diabolical villains the world has ever known, plus Captain Algernon Righteous of the British navy who is determined to bring them to justice and execution