That is, if you want there to be a single, well-written, consistent, overarching plot that ties everything together into an exciting, fun movie, like in the first movie? Too bad.
Apparently they're reiterating the history of pirate movies. First, a really GOOD one. Then, a bunch of sloppily thrown-together, quick and dirty, unhappy scatterings of films that try but never succeed in bringing back the fun.