Jake (Anton Yelchin) and Mati (Lucie Lucas) are two expats who experience a brief but intimate connection in the ancient Portuguese city of Porto. He's an American loner exiled from his family. She’s a student from France embroiled in an affair with one of her professors. After spotting each other from a distance at an archeological site and then again at a train station and a café, Jake works up the courage to approach Mati and they embark on a night of carefree intimacy. This romantic encounter is viewed from years later, both characters still haunted by the powerful connection they shared. Using a mix of film stocks and art direction that evokes a bygone era of European cinema, Porto delivers a cinematic form of saudade – a Portuguese word that describes an emotional state of nostalgic longing for a person or place that one has loved.