In her small village in Vendée, Ludvine, an orphan, is in love with Jean-Pierre, but he is jealously guarded by her woman employer. On the day of the "Fair of Women", a traditional event where young men can choose the girl they fancy, Jean-Pierre picks out Ludvine.

In Marseille, crime squad captain Dominique fights against racketeers and tries to put a young man back on the right track.

A young composer is forced to work as a bar pianist. One night he gets hit by a car and is brought to a hospital. Severely injured he is injected with morphine. He becomes addicted.

A building, a landing, two tenants: he, Jacques Loursier, is president of the U.R.A.F (Union and Resistance Anti-Woman); she, Eliane Cahuzac, is president of the Association for the Triumph and Independence of Women. Unaware of each other until then, a cold war begins between the two parties. An attempt at conciliation fails then, after many adventures, love triumphs.