A fortune hunter leads a search for diamonds guarded by undead sailors off the coast of Africa.

During World War II, an American bomber pilot is rescued after drifting at sea aboard a raft. After being administered truth serum, he tells the doctor a story of how he and the three survivors of his plane crash washed up on an island that was inhabited by a tribe of beautiful primitive cave-women, dinosaurs and a group of savage cavemen who are bent on abducting the women for breeding purposes.

New York City newspaper writer J.J. Hunsecker holds considerable sway over public opinion with his Broadway column, but one thing that he can't control is his younger sister, Susan, who is in a relationship with aspiring jazz guitarist Steve Dallas. Hunsecker strongly disapproves of the romance and recruits publicist Sidney Falco to find a way to split the couple, no matter how ruthless the method.

The rebellious Thracian Spartacus, born and raised a slave, is sold to Gladiator trainer Batiatus. After weeks of being trained to kill for the arena, Spartacus turns on his owners and leads the other slaves in rebellion. As the rebels move from town to town, their numbers swell as escaped slaves join their ranks. Under the leadership of Spartacus, they make their way to southern Italy, where they will cross the sea and return to their homes.

A wealthy woman discovers a vineyard worker with a beautiful operatic singing voice. She helps make him a star but then breaks his heart. He flees in misery to Mexico where he meets a sweet farm girl.