Jack Sparrow races to recover the heart of Davy Jones to avoid enslaving his soul to Jones service, as other friends and foes seek the heart for their own agenda as well.
Once again were plunged into the world of sword fights and "savvy" pirates. Captain Jack Sparrow is reminded he owes a debt to Davy Jones, who captains the flying Dutchman, a ghostly ship, with a crew from hell. Facing the "locker" Jack must find the heart of Davy Jones but to save himself he must get the help of quick-witted Will Turner and Elizabeth Swan. If thats not complicated enough, Will and Elizabeth are sentenced to hang, unless Will can get Lord Cutler Beckett Jacks compass. Will is forced to join another crazy adventure with Jack.
William and Elizabeth are sentenced to death for being in contact with Jack Sparrow. For saving Elizabeth, Will accepts to bring Jacks compass in exchange for his and Elizabeths freedom. Meanwhile, Jack is being hunted by Davy Jones. Elizabeth escapes from prison to look for Will. Jack agrees to trade Will his compass if he finds a special key that will open a special chest. To find the key, Will goes aboard the Flying Dutchman, upon which he gets captured. He is reunited by his father on the Flying Dutchman. He finds the key and escapes the ship. Meanwhile, Jack gets Elizabeth to find the chest containing the heart of Davy Jones. Will and Elizabeth reunite on the island and open the chest and find the heart of Davy Jones. While Jack wants it to settle his debt to Jones, Will wants it to free his father and another person wants it for his own needs. Who is this mysterious person and what does he want to do with it?