The future of Marguerite, a brilliant student in Mathematics at the prestigious Ecole Normale Supérieure, seems all planned out. The only woman from her year, Marguerite is finishing a thesis she has to present to an audience of researchers. On the big day, a mistake shakes all her certainties and all her foundations collapse.

In eastern France, two teenage cousins have the summer of their lives when they paddle a purloined canoe to the far shore of a lake.