Tina, an old lady and detective stories buff, moves to town in the house of a god-daughter of hers whose husband is a private dick. She thinks she will be able to help him with his inquests. He does not agree with her and tries to discourage her by any possible means.

Treacherous Roman senator Lucius Quintilius plans a secret journey into Thrace to recover a legendary treasure. He is accompanied by his daughter Livia posing as a Christian slave girl, his cruel henchman Commodio, and Terenzius, an ex-gladiator and Nero look-alike who fools the local Thracians into believing he is the real Emperor. But Lucius's plans are thwarted by Spartacus and his band of rebels who succeed in capturing the treasure for Thrace. When news arrives from Rome that the real Nero has died, local Roman governor Consul Metellus joins forces with Spartacus to defeat the traitors.

A doctor running a health clinic by the sea is convinced that women are the cause of the disturbed behaviour of his (male) patients. We get to follow the adventures of the patients during a day on the beach.

Dakota Joe is a hired gunman. For that reason he arrives at a border ranch in Mexico hired by the landowner Don Carlos, to eliminate the village doctor, a good man who helps the poor. So Dakota Joe decides not to fulfill his commitment and together with a former outlaw who is now honored, they plan to steal all the money that Don Carlos stores in the safe and to support the revolution of Zapata

When he was 12 years old, Bill Cody, later knew as Buffalo Bill, is rider for "pony express" carrying the mail through the wilds of America. It becomes later caravans guide. When driving one of them meets Luisa, the niece of a priest who tried to evangelize the savage tribes accompanied by a converted Indian. It is a dangerous time because, before the advancing white man, the Sioux tribes are buying weapons from unscrupulous dealers...

Three unequal brothers seek revenge for the murder of their father. Each of them goes a different way.

When Bob Carey is released from prison after a long sentence for murder, begins the search for Mary, his former girlfriend. But soon he finds out that during his absence, she has married Clifford, a wealthy landowner. The happiness of that marriage is only apparent, Mary, in fact, is seriously ill, suffering from a brain tumor whose pains she attributes to an imaginary pregnancy. It becomes necessary to bring to the city of Laredo for an operation, so Clifford sells all his possessions and begins the long journey towards hope. Soon others will join the expedition: a former army scout named Rogers, a nice Chinese cook, Lin-Chu, and a mestizo that responds to the name of "Bets".

The elderly O'Hara, owner of a fortune in emeralds, offers half of his estate to whoever manages to get him out of jail. The adventurer Don Casey arrives in the town of Guaynas, ruled by the tyrant Villarde, to fulfill that wish.

A gunman returns to his earlier life when the Carter / Castle brothers shoot his friends and he is threatened with being separated from his son.