Mary finds herself on a university exchange in the medieval town of Siena, Italy. She soon meets a new group of friends but is only focused on Evelyn-a stunning and seductive lesbian who she swears is flirting with her. Once their friends begin pressing her to reveal her crush, Andrea grows suspicious and confronts her. Mary openly admits her attraction but doesn't know how to make a move. That is, until Andrea finally initiates their first kiss, which she eagerly reciprocates. As they explore their romance together-from Siena to Rio Maggiore-they try to keep it casual but things become complicated when Evelyn grows jealous and Mary gets attached. Is this a just a summer fling or something more?