Okay! Plot details have finally emerged.
Be advised if you want to know NOTHING about the story then please avoid this but there's nothing 'spoilerrific' about this IMHO.
And for the record, looks like both Ubiq and I were right.
"In the third installment of the Pirates of the Caribbean series, Will, Elizabeth and Capt'n Jack Sparrow are once again thrown together for a showdown between the fiercely independent Pirate Lords from around the world and the all powerful East India Trading Company led by the mysterious & cunning Lord Cutler Beckett. With possession of Davey Jones's chest, Beckett is now able to use Jones and his ship the Flying Dutchman to further his plans of ridding the open seas of all Pirates. In response to this growing threat, the Pirate Lords call for a secret meeting at Shipwreck Cove."
"Newly returned from the other side, Capt'n Barbossa agrees to help Will and Elizabeth rescue Jack who is now trapped in a very strange afterworld known as Davey Jones's Locker. This unlikely trio makes their way to the exotic Far East where they meet Captain Sao Feng, the Pirate Lord of Singapore, and retrieve a special map that will then show them the way to Davey Jones's Locker."