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 ...

France, 1981, première année du premier septennat de François Mitterrand. Patronne de choc d'une importante société d'articles de sport, lors d'une houleuse assemblée du CNPF (ancêtre du MEDEF), Florence Vannier-Buchet, femme de droite, rencontre Antoine Lombard, le tout nouveau secrétaire d'État aux universités, militant socialiste. Ensemble, ils vont tenter de vivre leur passion amoureuse sans sacrifier ni leur vie professionnelle ni leur engagement politique. Jean-Marc, le mari de Florence, excédé par cette aventure décide de divorcer…

Un politician socialist și o femeie de afaceri conservatoare refuză să lase convingerile diferite sau căsnicia să le distrugă povestea de dragoste.