Two girls, one born in Poland and the other in France, have the same appearance, the same age, and the same name: Veronika. They both love music and have sweet voices. Veronika from Poland loves singing very much, and her high notes are particularly outstanding. She feels that she is not alone in this world. Unexpectedly, one day she really meets a girl who looks exactly like her, but she herself died of a heart attack on the stage during a performance. At this time, Veronika in France was intoxicated with the joy of her boyfriend, and suddenly she felt particularly empty and sad. After that, a very sad song often sounded in her life, and she fell in love with a children's book writer. During a chat with her boyfriend, she found a woman who looked very similar to herself in the photos taken in Poland. At this time, she deeply believed that there was another self in the world.