This is a movie/parody of WWI set in a small town in France. Three soldiers are sent as an advance to evaluate conditions before the main force is sent. Hearing voices, the lead actor enter a building and finds a hospital floor full of patients. As he is proclaimed the King of Hearts, he realizes the place is an insane asylum and he flees, leaving the gate to the ward unlocked.
Following is a parody of inmates returning to the places and post they once occupied, or identified with. The movie revolves around this corporal (lead actor) attempting to save the townspeople from dying in this explosion of a German-set bomb. As they are all leaving the town, the people he wants to save stop at the edge of town and explain their refusal to leave by asking him where is it safer/crazier, at the asylum or out there, where man is killing man with bombs and bullets. They return to the asylum and the corporal disassembles the bomb and prevents the destruction of the town. In a military encounter before, British and German soldiers met in the center of the village and killed each other off, the futility of fighting wars exalted.
The British eventually take the town and the corporal is returned to the ranks. As the movie ends, you see the corporal walking down this street, shedding his rifle and backpack, then his cassock, shirt and pants, as he approaches the entrance gate to the asylum and goes in stark naked.
