Inspired by an intended film starring Sylvester Stallone, this how I would imagine it would go. 

SYNOPSIS:

GALE FORCE

Ethan Taylor is a courier and salvage diver who works for a courier service and salvage service on a coastal town living with his girlfriend Elena Reyes , meanwhile barrier bonds are being delivered when a group of pirates led by Andre Belmont to steal them, they nearly succeed but are foiled by a Federal Agent and the money is lost in the sea near the coastal town.

Making a fake call Ethan and his team head out there, but are taken hostage and told to help them recover the money before anyone else finds it, and ignores Ethan’s warning that a storm is coming. Ethan manages to slip away and finds the money, and begins a game of cat and mouse with Belmont and his men. Elena and the bosses find Ethan and help him, after eliminating some of Belmont’s men until there is a final showdown between Ethan and Belmont who had captured Elena and the storm hits.

Ethan manages to defeat Belmont and saves Elena, and the pair survives the storm, authorities arrive and recover the money and Elena helps exposes the people who helped Belmont with the theft. Ethan and Elena finally marry.