The simple story has the pair coming to the rescue of peace-loving Mormons when land-hungry Major Harriman sends his bullies to harass them into giving up their fertile valley. Trinity and Bambino manage to save the Mormons and send the bad guys packing with slapstick humor instead of excessive violence, saving the day.

At the beginning of the 1913 Mexican Revolution, greedy bandit Juan Miranda and idealist John H. Mallory, an Irish Republican Army explosives expert on the lam from the British, fall in with a band of revolutionaries plotting to strike a national bank. When it turns out that the government has been using the bank as a hiding place for illegally detained political prisoners -- who are freed by the blast -- Miranda becomes a revolutionary hero against his will.

The two brothers Trinity and Bambino are exchanged by two federal agents and take advantage of the situation to steal a huge booty hidden in a monastery by a gang of outlaws.

After Doug picks up hitchhiking Rosco with his truck, they are mistaken for two bank robbers by the traffic police. They manage to escape only to be confused for two secret agents while trying to take a flight at the airport.

An attempted robbery turns to be an unexpected recruitment when two unemployed men mistakenly break into a police office instead of a store.

Half-breed Keoma returns to his border hometown after service in the Civil War and finds it under the control of Caldwell, an ex-Confederate raider, and his vicious gang of thugs. To make matters worse, Keoma's three half-brothers have joined forces with Caldwell, and make it painfully clear that his return is an unwelcome one. Determined to break Caldwell and his brothers' grip on the town, Keoma partners with his father's former ranch hand to exact violent revenge.

Alan gets a map to some war treasure which the Japanese army left behind on a small Pacific island at the end of World War II. But some gangsters try to steal the map from him and so he hides on Charlie's boat which just leaves the harbor. He manipulates the ship's compass so that Charlie is not aware that he is sailing to the treasure island. But when they step on the island, they discover that it is not as abandoned as they believed: there are some natives - and a Japanese soldier still defending the treasure

Inspector Rizzo is accused of drug trafficking. In order to clear his name he has to find out who is the person, from a Mafia ring, who has infiltrated his police department.

Outlaw drifter Buddy is mistaken for a doctor after his Indian companion inadvertently steals a bag of surgical instruments.

The "Trinity" crew makes another modern era film. Plata and Salud are pilots ditching aircraft for insurance money. They wind up crashing for real in the jungles of South America. The plot involves "Mr. Big", who is buying the diamonds from the miners for much too little, and has thugs who keep the price down. Of course, Plata and Salud side with the miners

Two missionaries come into conflict with the authorities when they turn their missionary into a parrot farm. The Bishop of Maracaibo calls them his 'black sheep' and the Monsignore has been called to check on their behavior. Like usual, our heroes help the poor to defend themselves and provoke some funny fist fights in the process.

Hud Dixon returns to his hometown when his brother is killed by a lynch mob.

After Cacopoulos manages to save himself from being hung on a false charge, he robs Cat Stevens and Hutch Bessy of a lot of money and steals their horses. This results in a merry chase and Stevens and Bessy become unwilling allies in Cacopoulus' revenge against the people who deserted him and framed him to get their money back.

Following the events of The Sheriff and the Satellite Kid, Sheriff Hall and H-725 (using the official identity of Charlie Warren) still get no rest from the military - because the little alien has not yet grasped the meaning of keeping a low profile. They are constantly on the move, and H-725's father has had to pick them out of a tight spot too many times already.

The "Bulldozer", a former football star, is now working as a fisherman. As a group of street-people arranges a football match against the local Armybase, he is asked to be their trainer. His boat was damaged by a submarine and he currently has no work, so he agrees.

The town of Newnan are seeing little green men everywhere. The military have arrived and are on the lookout for UFOs. Everyone's high strung and Sheriff Hall (Bud Spencer) is left to deal with the aftermaths of the hysteria. On his way home from patrol he happens upon a little boy claiming to be an alien by the name of H7-25. At first the sheriff doesn't believe the boy, but with the mounting evidence, even he must eventually concede. Soon the military is after Sheriff Hall and H7-25, and it is up to the sheriff to keep the boy safe and beat up large swaths of soldiers so H7-25 can go home.

Inspector Rizzo and Marshal Caputo go to Egypt and look for Professor Cerullo, who is missing.

Two mismatched buddies are mistaken for mob enforcers in Depression-era America.

By his dying father's last wish Joe is sent to the Wild West to become a real guy. The dreamy young man despises guns and fights likes poems and prefers bicycles to horses. Now his three teachers footpads all of them shall teach him otherwise. This doesn't work until Joe has to defend himself against gunman Morton who's jealous of Joe's love to rancher Ohlsen's beautiful daughter.

Medieval soldier of fortune Ettore is traveling through Europe with his partners looking for a fight where they can earn some money. When they come across a Spanish castle under siege by the French army, Ettore bides his time to determine which side is the winning one. This is at first the French, but the treatment he receives from them is unpleasant enough to make him change his mind and turn to the Spanish side. Somehow, Ettore must rally the weakened Spanish troops to battle their enemy long enough for reinforcements to arrive.