It's early summer and Agathe is back in France, at home in Montreuil. She has to get over her husband's death and return to her work as a film director. The unexpected arrival at her house of a couple of Icelanders, a sea lion and a neighbour that she has always desired yet never vanquished will give Agathe the strength to get her life back on track...

Samir, a lanky crane operator in Montreuil, falls madly for Agathe. As master swimmer at the pool Thorez he decides to take swimming lessons with her. But the lie does not last three lessons - Agathe hate liars. Chosen to represent the Seine-Saint-Denis, Agathe flies to Iceland for the 10th Congress of the International Masters Swimming. Samir has no choice but to fly in turn also.