A clique of four young teachers at a high school looks critically at their colleagues. To avoid falling in the same routine, they bring new ideas into the school lessons and play little games and pranks in their spare time -- sometimes get even more childish than their pupils. When they get opposition from the other teachers, they play tricks to get rid of them.

It was during their childhood that François and Malène became friends. Years later, the two teenagers find themselves. Their parents, moved by their reunion, will help them not to spoil this new chance.

"Cocktail Molotov" is the story of the adventures of this threesome, who reach Venice only to learn of the outbreak of the May 1968 disturbances at home. Once again, Anne, Frederic and Bruno realize that the important things of their time are happening somewhere where they are not. Swindled out of their car and virtually broke, they hitchhike back to Paris, hoping to arrive in time for some of the excitement.

Visitors young and old get up to fun antics and romance at a seaside hotel in Brittany, France.