Rosa is a normal Korean housewife. She is in her late 20s and her husband, Kyumin, is a successful architect in his late 30s. They live comfortably, in a well to do apartment and have friends similar in age and professional status.
But Rosa suspects that Kyumin is having an affair. She follows him to a different apartment and to her shock discovers that he is having an affair with a young man. The young man is Leo, in his mid 20s and very good looking. Disraught, Rosa goes the next day to a travel agency and books a trip to Italy to visit a male friend. She by chance runs into Leo in the street. Leo too is distraught because Kyumin has just ended their affair.