I'm a Facebook group that I'm a part of someone asked to share Fan fiction ideas so I posted one I'd had on the back burner for awhile. It didn't get much traction there but having written it out for the first time I actually really like it so I figured I'd post it here as well.
Ok, usually I don't like giving away my ideas but this is fan fiction so here it goes, it's not like I own any of the aspects of this story anyway.
Ill call it "Pirates of the Caribbean: Deep Seas for now and I'll tell it in Acts because it's a movie franchise.
We see Captain Jack Sparrow Approached by Davey Jones asking for an alliance. Davey Jones, back in command of The Flying Dutchman and resuming his charge of Ferrying souls, is at a loss because there seems to be so few dead at sea as of late. Through some investigating they discover that the Royal Navy is involved in some sort of shadow war with an armada of mysterious ships. They track the flagship, The Devil's Reef captained by a "man" known as Marsh, to a sort of oil rig in the ocean where Marsh and his crew of "deep ones" appear to be fracking the souls of those who died at sea. We see that the advanced technology of these mysterious invaders runs off the souls of the dead. The Flying Dutchman and The Black Pearl along with the British Royal Navy attack the rig and The Devil's Reef. The Devil's Reef has Lasers, a Force Field, and torpedoes so of course attackers are quickly routed.
Having sustained heavy damage and heavy losses, The Flying Dutchman, Black Pearl, and a few Royal Ships find port in a small, uncharted township. Initially the town looks deserted, but they see amazing things, things basically analogous to television, radios, computers, and the internet. All of it encrusted with barnacles and corral. This seems to be one of the forward operating bases of the Deep ones. They discover that there seems to be some sort of energy crisis, and discover the capital is in the Mariana Trench off the coast of Puerto Rico. After making a harrowing escape, the allies marshal their forces and head for the trench. They just have to make one stop.
Arriving at the Trench, Davey Jones does some Mcguffin stuff and the entire allied armada submerges and heads for the deep one's capital city. A battle with the Deep ones' fleet ensues and the allies' ships' are all destroyed. The Deep ones start collecting the bodies so they can collect and refine the souls for fuel, when they discover something on the bodies. Each one is wearing a medallion, a gold coin. The allies spring to life having all been cursed with undeath because of the cursed gold and an enormous battle ensues.
Davey Jones, Jack Sparrow, and the rest of the cast break through the front lines and head to the refinery, which when destroyed, will disable the entire Deep one war machine. They face down Captain Marsh in the chamber of the Deep One Patriarch, Dagon, a giant fish (possibly a kracken) who explains to them how he and the rest of his kind are millions of years old and that their necromatic technology has rendered them sterile and that's why they have to impregnate human women. Also their society is dependent on their technology, and their technology is dependent on souls. A final battle with Captain Marsh ensues and our heroes somehow, brilliantly, smash the refinery and escape, having saved the seas and the dead.