The live-action series follows the estranged members of a family of superheroes known as the Umbrella Academy. Years after disbanding, the siblings reunite after the death of their adoptive father, who trained them to save the world years ago. Each possessing unique powers and personalities, the dysfunctional members of the Umbrella Academy include Luther, Diego, Allison, Klaus, Number Five, and Vanya.

It's war in the West Indies, and the shores of New Providence have never been bloodier. While Eleanor Guthrie and Woodes Rogers hold Nassau, Captain Flint sails to strike the final blow. Meanwhile, from the interior, an insurgency builds, fueled by the legend of Long John Silver. But the closer civilization comes to defeat, the more desperately, and destructively, it will fight back.