The Black Pearl remains trapped in the Locker until Sparrow deciphers a clue on the map, realizing the ship must be capsized to return to the living world. The ship is overturned at sunset and upturns back into the living world as the sun rises; a green flash marks their return. When the crew stop at a small island to restock supplies, they are ambushed by Sao Feng, who reveals his secret agreement with Will. However, he betrays Will, having made another deal with Cutler Beckett to hand over the crew and keep the Black Pearl. The Endeavor arrives, and Sparrow is taken aboard, although he refuses to divulge to Beckett where the Brethren Court will convene. When Feng is double-crossed by Beckett, Feng bargains with Barbossa to release the Pearl in exchange for Elizabeth, who he believes is Calypso trapped in human form. Feng attacks the Endeavor, allowing Jack to escape. Aboard his warship, the Empress, Feng tells Elizabeth that the first Brethren Court trapped Calypso into human form so men could rule the seas. Feng is killed when Davy Jones attacks his ship. Before dying, he appoints Elizabeth as the new captain and the Pirate Lord of the South China Sea. She and the crew are then imprisoned in the Flying Dutchman's brig. Also aboard is Admiral James Norrington, who frees Elizabeth and her crew after regretting his prior actions. They escape to their ship, although Norrington is killed by Will's deranged father, "Bootstrap" Bill after discovering Norrington helping Elizabeth and her crew escape.
Will leaves a trail of floating corpses for Beckett's ship to follow. Jack catches Will and gives him his magical compass so Beckett can find Shipwreck Island. Jack then tosses him overboard, but Will is rescued by Beckett's ship, and it is revealed that Davy Jones masterminded Calypso's imprisonment by the first pirate lords. At Shipwreck Island, the nine pirate lords disagree over freeing Calypso. Barbossa calls upon Captain Teague Sparrow, Keeper of the Pirata Codex, and Jack's father, to confirm that only a Pirate King can declare war. Elizabeth, newly ordained Pirate Lord of the South China Sea, is elected Pirate King after Sparrow’s vote for her breaks a stalemate (each pirate lord only voted for themselves). She orders the pirates to go to war against Beckett. During a parlay with Beckett and Jones, Elizabeth and Barbossa swap Sparrow for Will.
source:Wikipedia
