In a small Corsican village, the life of Hélène, ordinary and single, She works as a maid in a hotel and is married happily with her Husband Ange and her fifteen year-old daughter. Her modest and monotonous life seems to be predetermined… One day while cleaning a hotel room, she meets a young, seductive, American couple which is playing a game of chess. First fascinated and then passionate about the game, Hélène learns with great tenacity she studies the rule of the game to perfection. She can count on Dr. Kröger, who is a mysterious inhabitant, to help her to achieve her goals. But this positive transition towards a liberty for Hélène does not go about without deeply changing her relationship with family, friends and inhabitants of the village.