Sophie, viscountess of Valrude, believes herself being a widow since her husband disappeared in the Amazon.

Antoine, an accountant by trade, becomes a private detective to support his family. His wanderings lead him to transport a cargo of malachite to Le Havre, in the hope of a large bonus. With the help of his family, and despite a few mishaps, Antoine achieves his goal.

Robert Lamoureux plays a General in the Resistance. With an unlikely team of French patriots, he easily outwits the buffoonish Germans and steals the master copy of their plans to invade England. By doing so, he prevents the invasion and makes it more likely that the Allies will win the war.

In 1944, a retired German detachment found itself stranded in a French town. The inhabitants try to live in good harmony with the occupants. But one day kids, playing with a grenade, accidentally cause the death of an SS lieutenant.