On an ordinary afternoon at a train station, the lives of Nando and Breno are transformed by an unexpected encounter. Both living in stable relationships, they find themselves drawn to a sudden passion that challenges all of their certainties. As the attraction between them grows, Nando and Breno embark on a love affair that tests the strength of their marriages. Amidst a whirlwind of emotions, they are forced to confront their choices and question what they truly want from their lives.