The report also includes a brief synopsis:
"Jack and his team are in search of The Trident, which Keith Richards' Captain Teague holds valuable information to. The villain this time is Captain Brand, a ghost that wants the Trident so he can get his revenge on Jack.
Brand believes Jack turned his brother Eric into a pirate, which led to his death. Also, Jack becomes enchanted by Barbosa's daughter, Carina Smyth, a woman called a witch by some though she's actually an adept astronomer."
Rebecca Hall is said to be circling the Carina role. Filming is slated to begin next year for a release in Summer 2015.
Source: The Daily Mail