 It is one of many underwater-themed movies released around 1989, including "The Abyss", "Leviathan", "DeepStar Six", "Lords of the Deep", and "The Rift" (Endless Descent).Max Cash is a down-on-his luck fisherman and charter boat captain living in the Bahamas when his life takes a turn when he meets Sarah Livingstone, a tourist who is seeking to find the treasure of accursed shipwreck, 'The El Diablo' which has been rumored to have sunk on an offshore reef near one of the many islands.Max and Sarah then team up to locate the wreck while dodging a local crime boss as well as a mysterious businessman who claims that the wreck is guarded by supernatural forces in form of a sea monster that no one claims to have ever seen and survived.