Commander Jonathan Ward and his crew on the old attack sub Spadefish are on one last mission. A US Navy SEAL team is inserted into South America. Their orders are to destroy the secret laboratories of the world’s most notorious drug cartel, and the Spadefish has been sent to provide assistance.

But Juan de Santiago, the violent billionaire drug lord, has an entire private army and a futuristic new mini-submarine of his own. He will do anything to protect his empire.

And he knows the Americans are coming...