Synopsis: Kaan and his wife Prae quit their jobs at Steve’s dive shop to try their luck by purchasing a small boat to trap crabs.
One day, Kaan’s net brought up a large piece of coral I which embedded a piece of metal. Kaan took his find to Steve who took the piece of coral apart and found an ancient European pistol over 300 years old. Steve thinks that there may be a sunken ship containing more treasures in the area where Kaan found the pistiol. They, therefore, decided to search for this wreck together.
News of the discovery reached the ears of Saeng, an influential gangster, who wanted the treasure himself. Unknown to Steve, Kaan and Prae, Saeng followed their boat. What follows is an exciting adventure.