An American submarine races to get a nuclear weapon before a Russian submarine.

A Molokai-based civilian pilot and an undercover DEA agent intercept a delivery of diamonds intended for druglord Seth Romero. Seth, his henchmen, and other island undesirables launch a full-scale assault on the duo. If they're going to survive, they'll need the help of agent Rowdy Abilene and his partner/kickboxing expert Jade.