Bernard, a teacher, lives with his wife and son in quiet, rural France. One day, a married couple moves into the house next door. The woman, Mathilde, happens to be Bernard’s ex-lover, with whom he had an intense affair. Meeting each other once again, they are sucked into that same passion…

Simmering with illicit desire, François Truffaut’s tempestuous drama stars Fanny Ardant in her first collaboration with the director. Unable to be with or without the other, the film’s doomed lovers are consumed by the twin flames of an extramarital affair, in which guilt coexists with pleasure.