Henri Serin (Jean-Pierre Marielle), an umbrella salesman, leads a quiet life between his work, his family and his passion for painting. During his many business trips, Henri indulges in a few amorous escapades, which provide a welcome change from the tiresome daily routine his bigoted wife locks him into. One fine day, Henri decides to drop everything and live on love and fresh water. He ends up in Pont-Aven, where he meets Émile, a local painter imitating Gauguin, with whom he shares his drinking and other feminine attractions.

Henri Verdier, a young bank manager, has made the acquaintance of Karine, a model of great beauty. Robert, who claims to be Karine's brother, forces Karine to introduce him to Verdier. This is to offer him an urgent business deal: 50 million for a uranium purchase which, within a few days, should yield double that amount. Blinded by passion, Verdier accepts and "withdraws" the necessary sum from his bank. He soon realizes he's been duped. Karine is not Robert's sister and Robert is a crook. Verdier tracks them down.

Paris, in the spring of 1968. Albin Cérès, 23, the son of a bourgeois couple on the verge of breakdown, seeks happiness in life. Disappointed by Laurent, the leader of a small group of revolutionary students ; disappointed by Paméla, a girl he half-heartedly makes love to ; refusing the friendship of Moss, a refined fifty-year-old who is secretly in love with him, Albin returns to his parents'home for a while. Shortly afterward he meets Lore, a lovely young lady, who dreams of revolution... A great love is born!

Les Charlots, a French rock group, continue their adventures, in the manner of the Beatles in Hard Day's Night. This is their second adventure. The foursome are on holiday, camping outside a village. The Olympic flame is going to pass through the village. A grocer, charged to prepare a celebration, calls upon the four to help. One of the four falls for the grocer's daughter. However, she runs away after the sportsman carrying the flame. The foursome set of to find her and win her back.