15 years after that fateful card game on Christmas Eve, Franco gets his onetime friends back at the poker table for the rematch and a long-awaited payback.

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

A bumbling government agent recruits a trucker whose gambling knowledge can help crack an illegal Florida operation.

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 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.