In an idyllic summer in Sweden, a young art student named Karin embarks on a period of self-discovery and emotional exploration while spending her vacation at her parents' country house. The tranquility of the rural landscape contrasts with her turbulent emotions, especially as she relives memories of a thwarted love and her fervent desire to understand her own future as an artist.
During her stay, Karin encounters a group of friends, including two young men who evoke conflicting feelings in her: attraction to one and loyal friendship with the other. As the weeks go by, tensions and jealousy begin to rise, leading to a game of hearts that intensifies with each action. Amidst splashes in the lake and conversations at sunset, the young woman grapples with her insecurities and the pressure of choosing the path she will take in her ideal life.
The summer becomes a pivotal point of reflection, where Karin realizes that love and friendship are not always straightforward, and the decisions she makes will impact her future. Amidst laughter and tears, the story reveals the complexity of human relationships, as Karin confronts her fears and longings, leaving behind a part of her childhood and welcoming adulthood. With a touch of nostalgia, this summer experience transforms into a journey that will change her life forever.