Paul, a mute in his thirties, lives in a Parisian apartment with his aunts, two old aristocrats who dream of seeing him become a virtuoso pianist. Isolated from the outside world, Paul has aged without ever having lived, until the day he meets Mrs. Proust, his neighbor on the fourth floor. This eccentric woman has the recipe for an herbal tea, which through music, brings back memories more deeply buried. After drinking it, Paul discovers his history and finds the key to help him finally live his life.