Only Depp, Rush and McNally reprised their roles in every film. If this is the start of a new series, it is a step in the right direction.
Will is recruited by Beckett to find Jack's compass so Beckett may use it to lead him to the heart of Davy Jones, which will give him enough control to eradicate pirates for good and allow the East India Trading Company to establish dominance across the world.
Upon learning of Bootstrap Bill's actions, Barbossa has Turner strapped to a cannon, and sent to the bottom of the ocean. In response, Beckett had Jack branded as a pirate and Jack's ship, the Wicked Wenchburned and sunk.
His superior Cutler Beckett promotes him to captain and gives him command of his own merchant ship Wicked Wench. As one of the Nine Pirate Lords, Jack is needed in order to release an ancient goddess with the power to defeat Beckett's forces.
This has been pitched as "the final adventure," and no one is expecting a redux of the prior sequels' blowout box office. I love the [Pirates] movies, but part of the reason Paul and Rhett are so interesting is that we want to give it a kick in the pants.
Jack is eventually arrested and thrown into jail. Jack wants revenge against Barbossa, who left him stranded on an island before stealing his ship, the Black Pearl, along with pieces of cursed Aztec Gold.