A young engineer, inventor of a dangerous ping-pong ball, which makes him pursued by the American and Russian secret services, finds refuge in a military camp where his irruption sows some semi-catastrophes.

Alfredo Moreno is a police officer in Paris. Married but separated from his wife, he meets Virginie, a pretty, rather interested blonde. But the Spanish police call him to come and recognize a body they think is that of his wife.

Henri, Daniel and Xavier have just opened a travel agency in Paris. Henri runs the agency while Daniel and Xavier go on trip to take care of the group of tourists in Morocco. The troubles begin when Xavier and Daniel arrive in Morocco and discover that Henri has closed the agency in Paris and hasn't booked any hotels or attractions for the trip. Without any money, Daniel and Xavier decide to continue the journey. Their luck is their meeting with the rich Prince Douzami who falls in love with one of the tourist, Marilyn, and he decides to help them. The trip is still disturbed by two criminals Mata and Harry who want to take a microfilm that daniel has unfortunately swallowed.

In order to subdue the conscripts of Chamber 13, a new captain is assigned. He is an adventurer, a nostalgic of his warrior past and the resistance is quickly born within the young soldiers.

Two friends, Philippe and Jeannot, are drafted the same day and assigned to the same place. They have no taste for military life and during the conscription visit they try all they can to be declared unfit for service. They fail and land in barrack room 13, where a bunch of other "rebels" is gathered together, under the approximate control of a stupid warrant officer and a depressing captain.They all still have hopes of returning home soon.Besides Philippe and Jeannot, this motley crew consists of a rich allegedly kleptomaniac snob, a phony queen, an orthodox Jew, a yogi, a hippie, a Belgian, a hermetic poet, an Arab, and that's not the half of it...

7 American high school girls visit Paris.