Anna and Matteo are on their way to a family meal, something they do every Sunday. But in Anna’s head, things are seething: she can’t help but imagine another reality... so far from hers. Today, without warning, everything explodes. A hand brushes against her, a look seduces her. Anna discovers a world she doesn’t know. Is it a world in which you lose yourself? The Theory of Y explores the desires and loves of today with humour and delicacy.