Ingmar Bergman's film about love found and lost within a summer. One summer, Mari (Maj-Britt Nilsson), a young ballerina, seeks refuge from an unhappy homelife by staying with her uncle and aunt on an island near Stockholm. Despite her uncle's possessiveness, Mari falls for a young man Henrik and before she has to return to the city, they express their love for one another. But Henrik is killed in a swimming accident, and Mari has to return to the city and cope with a life alone. Years later, when she discovers her diary of her stay on the island, Mari returns to the island to confront her uncle. With the past finally dealt with she returns to her life of dancing and her new lover with a renewed outlook.