Pat Morrison (Reynolds) runs a shady salvage operation in Manila. His latest scheme involves finding $3 million worth of gold bars hidden by the military during World War II. To this end, he needs the help of several former soldiers who were present when the gold was hidden. The first is Jesus (Vic Diaz), a Filipino muslim and Morrison’s business associate. The second is Draco (Rodolfo Acosta), a hard-drinking, hot-tempered Apache living on an Indian reservation who answers Morrison’s telegram with the promise of finding a wartime lover named Maria Bonita.
The trio then breaks the third man, the bigoted Hansen (Lyle Bettger), out of a Filipino jail. Draco eventually manages to find Maria in a local bar, but discovers that she has grown older and gained weight. Meanwhile, Morrison rescues the captured Trev Jones (Clarke Gordon), a veteran with a heart condition who has been abducted by Wombat (Jeff Corey). With Trev’s help, Morrison and company are able to figure out the gold’s exact location in the Malinta Tunnel on the island of Corregidor. Along the way, Morrison falls in love with Jones’s daughter Bobby (Anne Francis), a tennis champion. This complicates matters as Morrison is sleeping with Jesus’s Japanese wife Mariko (Miko Mayama), a fact that Jesus discovers and confronts Morrison with.
Despite their differences, the four men are able to successfully locate and retrieve the gold. However, they meet resistance in the Philippine military. A gunfight ensues that leaves Hansen dead, Draco wounded and Jesus captured. After a brief chase, Morrison finds his escape route blocked and it is revealed that a jealous Mariko had tipped authorities off to their plan. The film ends at the airport with Bobby returning to the United States and a smiling Morrison being led away in handcuffs.