Ted Angelo, a writer struggling with alcoholism and his declining career, is fired by his publisher and ex-wife Maureen De Havilland while on an expedition in Cartagena to do research on pre-Columbian civilizations.

His best friend, art historian Alonso Quintero, helps Ted find a buyer in the black market, but is soon found dead.

When another merchant is murdered, Ted learns from the man who had tried to sell him the loot - a marijuana dealer posing as a fisherman - that the Spanish ship is located not underwater, but inside a mountain cave.

Ted considers selling the information to the Soviet embassy in Bogotà, but after realizing that the KGB is already involved, he and June convince Maureen to come to Colombia and rescue them.

[6] Film Authority gave the movie 3 stars, finding it a weird mishmash of Romancing the Stone, Close Encounters and The Terminator.