The film opens in October 2007 with Aurélien Bouvier, known as "Mouton" (Sheep), who is 17 years old. It was his destiny that the young Mouton would live his simple life as a seaside restaurant employee for three years and that he would be torn away from this life after a tragic night at the Sainte-Anne ball.

She is Florence Vannier-Buchet. Married to Protestant banker Jean-Marc Buchet. Florence leads a major sporting goods company with happiness and firmness. He is Antoine Lombard, Professor, son of a teacher, he is Secretary of State at the Universities. He divides his time between his ministerial activity and his riding in the working class suburb of Chartres. An elected member of the "pink wave". They met during a stormy assembly of the CNPF. The action takes place in 1983. Florence is engaged in a daring industrial and financial operation, while Antoine is putting the finishing touches to a bill for the renovation of Higher Education. Everything separates them and yet they do not manage to live separated from each other ...