Disappointed with his first attempt, God rests for one day then tries again, thus creating Adam and Eve, and also provides Fantozzi with a woman, his horrible future wife Pina.

As he struggles with dinosaurs and other prehistoric perils to feed his family (now including daughter Mariangela), Fantozzi meets another human being, his future colleague Filini.

However, by the time he has reached Athens after a 42 kilometer race, he can no longer remember the outcome of the battle and must run back to Marathon to refresh his memory.

Fantozzi, now a crusader returning from the Holy Land, falls in love with a beautiful princess, who is promised as bride to the winner of an upcoming tournament.

Fantozzi retrieves Excalibur from an enchanted lake, intending to wield it at the tournament, but his jealous wife Pina secretly replaces the sword with a duplicate.

Fantozzi and Filini, now employed at their characteristic mega-company, take part in a regatta on the river Tiber organised by their director the Earl Duke Modestino Balabam.

The race turns out to be a disaster of which Fantozzi and Filini are the only survivors: they end up paddling in the sewers leading to the open sea until, in 1912, they are rescued by the Titanic on its doomed maiden voyage.

Tasked with carving notches into the fuselage in order to keep the score of his superior officer's aerial victories, he damages the plane to the point that its tail detaches, taking Fantozzi himself down with it.

As the police break into his house during a dragnet, Fantozzi is arrested for smuggling a single bottle of wine and framed for the landlord's entire business.

of Variety commented that "Thought pics is jumpy and uneven, there are still some funny bits and Villaggio's humiliated little man is a treat of comic gestuality.