Ingmar, a young Swedish architect, is engaged to Monika but, marriage being paradoxically a serious thing in Sweden, he wants to put his future wife to the test. For this purpose, the couple made a trip to France during which Monika saw her former lover, Jean-Pierre, who is now married to Pauline, who assured her husband that, if he cheated on her, he would their marriage is over.

A story about the rise of awareness among the youth against the pollution and eco-system disaster. The conflict between the youth and ruling establishment is also taken under the inspection. The daughter of the prime minister and her relation to the son of another minister of opposing party is especially under surveillance.