In the South China Sea, gruesome creatures surface from the deep to attack and cannibalize the passengers on a luxury cruise liner. Few survivors remain when resourceful mercenary John J. Finnegan (Treat Williams), his mechanic (Kevin J. O’Connor) and first mate (Una Damon) moore their vessel alongside this luxury liner.

When they board the liner, they discover gruesome evidence that something hideous has attacked the ship. The decks are pooled with blood. The air is thick with a deafening silence. It is a ghost ship. Few survivors remain. And as the Argonautica sinks slowly into the murky waters, the man-eating creatures attack relentlessly, snatching the remaining survivors one by one. Time is running out. Finnegan and his crew must fight off the deadly creatures, knowing they have a very slim chance to escape the ship alive.