Charles Duchemin, a well-known gourmet and publisher of a famous restaurant guide, is waging a war against fast food entrepreneur Tri- catel to save the French art of cooking. After having agreed to appear on a talk show to show his skills in naming food and wine by taste, he is confronted with two disasters: his son wants to become a clown rather than a restaurant tester and he, the famous Charles Duchemin, has lost his taste!

When a young auto salesman is forced to give up a vacation with his wife in order to drive a big American car to its new owner who lives on the Riviera, he makes the best of things. First, he gets and old friend to ride along with him. Then, the two of them are joined by another pair of men who want to ride south.