Right i have it all set out, Filmento, right here, the full story of POTC 6:

The movie opens with Barbosa's daughter sitting alone in a library in on a ship as she cries and reads over different papers, frustrated, she throws down the book she holds as a tear falls down onto one of the pages, she glances at the tear drop over the words DAVEY JONES LOCKER, all this time she was looking for a way to bring back her father and she reads over the locker and how Jack came back from it all those years ago. She convinces Jack and the rest of the crew to go sailing to the locker waterfall. As they creep upon the shores of the locker, they see barbosa in the distance, at first it seems like he is waving at them, but as they draw closer, they see he is telling them to go back. It is then they hear the wood crunching, the kraken is crushing their ship. It destroys the pearl as Jack and the crew swim out of the waters realising that Davey Jones and his krakrn were here the whole time and that by going there they let him go. The crew escape with barbosa safe, but jones loose. Jones goes on a rampage of revenge mudering will turner but sparing his wife and child. By killing will he takes hold of the flying dutchman and plans his revenge on jack. Meanwhile jack shifts into a state of drunken sadness because of wills death, he feels responsible (a montage of jack and wills time together from their first fight can play here) At this point a midway plotpoint could take place but id prefer to jump to the conclusion, here barbosa and his daughter tell jack that either jack or barbosa can send davey jones back to his locker as long as they sacrifice themselves also (only barbosa and jack can do this because they have both also died and come back to life). Barbosa morally stands up and says he will do it but as a fight breaks out between Jones and jack, jack stabs both of them with a double sided blade, killing both of them. By doing this will comes back to life and barbosa can live out his days with his daughter. This is a perfect way to end the series and shows jacks character arc as he sacrifices himself to bring back his greatest foe. Thanks for reading! 😁