Thunder Bay

Two friends working a jungle oil field clash when one marries a lady of the evening.

Wildcatter Johnny Maverick and his pal go to a town in oil country offering $25,000 to the person who brings in the first well. They find oil on the outskirts but have to sell a share to a promoter who hires Johnny's old enemy.

Wildcatter Jeff Dawson does his best to bring in a gusher in Mexico despite continual bandit raids. He asks for help from his ex-employer Ward Conway, but Conway, now married to Dawson's ex-lover Marina refuses, fearing that his wife will want to renew her romance with the other man.

Four men from different parts of the globe, all hiding from their pasts in the same remote South American town, agree to risk their lives transporting several cases of dynamite (which is so old that it is dripping unstable nitroglycerin) across dangerous jungle terrain.

After the mysterious disappearance of an oil well owner, one of his workers, Gerardo assumes the business management. Soon, the owner's sister arrives from Argentina, and, believing that Gerardo killed her brother to keep the wells for himself, she starts working as a singer under a false name in the same casino her brother disappeared, in order to find out what exactly happened.