Description
In a dilapidated apartment building in post-apocalyptic France, food is in short supply and grain is used as currency. On the ground floor is a butcher's shop, run by the landlord, Clapet, who posts job opportunities in the Hard Times paper to lure victims to the building, whom he murders and butchers as a cheap source of meat to sell to his tenants.
Following the murder of the last worker, unemployed circus clown Louison applies for the vacant position. Louison proves to be a superb worker with a spectacular trick knife, and the butcher is reluctant to kill him too quickly. During Louison's routine maintenance, he acquires a package dropped by a mailman. Louison delivers the package to Clapet's daughter, Julie, who says the package contains confections and invites him to join her that evening. Louison and Julie's relationship blossoms into romance. At the same time, several of the tenants fall under Louison's boyish charms, worrying others who are more anxious for their own safety should they require meat.
Clapet tells apartment tenant Marcel Tapioca that his rent is late and he must give up his mother-in-law as payment. That evening, Julie begs her father to let Louison go, knowing that Clapet is killing tenants for meat. She goes to her apartment, unwraps a newspaper in her refrigerator and sees an article about the Troglodistes, a group of vegetarian rebels who live underground. Julie descends into the sewers to make contact with the feared Troglodistes, whom she persuades to help rescue Louison.
After the apparent butchering of Tapioca's mother-in-law, the Troglodistes go through the sewer pipes and attempt to capture Louison, but end up mistakenly capturing tenant Mademoiselle Plusse instead. Meanwhile, as Julie and Louison watch television, Clapet ascends to the roof, shaking the television antenna to lure Louison into going up to fix it. Attacking Louison with a cleaver, Clapet's attempt to kill him is foiled by an unexpected electrical explosion in one of the apartments.
Clapet, along with some sympathetic tenants, storms Louison's room in another attempt to murder him. Louison and Julie take refuge in a bathroom and flood it, floor to ceiling, until Clapet opens the door, releasing the flood and washing the attackers away. Mademoiselle Plusse escapes the sewers, finds Louison's boomerang knife, and gives it to Clapet. Clapet throws the knife towards Louison, but inadvertently kills himself. Louison and Julie play music together on the roof of the now peaceful apartment building.
