A tough, womanizing high-stakes gambler known only as Tennessee has an uneasy relationship with Duchess, madam of a thinly-disguised bordello, and no other friends at all. But he's saved from murder by a lonesome cowpoke ('My friends call me Cowpoke'), in town to meet his fiancée Goldie on the steamboat. When she arrives, there's a mysterious undercurrent between Goldie and Tennessee, whose newfound friendship with Cowpoke is destined to be severely tried...
On a tramp steamer off Central America are Mr. and Mrs. Sheppard, five prisoners en route to a Nicaraguan prison, and Corbett, an American carrying money for a Honduran counter-revolution. Denied permission to land in Honduras, Corbett releases the prisoners and with their aid hijacks the ship. They land, taking the wealthy Sheppards as hostages, and start the arduous trip upriver to Corbett's rendezvous, meeting jungle hazards
Os cientistas Clayton Forrester e Sylvia Van Buren são os primeiros a chegar no local onde caiu um meteorito. Logo depois, uma máquina alienígena aparece e começa uma matança aleatória. Fuzileiros navais são enviados para o local, porém as forças de ataque deles não está a altura da força de ataque dos alienígenas.
John Vickers has spent eight years hunting for the three men who murdered the woman he loved. He finds one, Woodson, and kills him in a gunfight, but not before learning that the other two men have joined the U.S. Cavalry.
