The princess Elisa and her eleven brothers live in peace and happiness until their father marries again and brings home a new queen. She turns out to be an evil witch. With her magic, she tries to curse Elisa, but Elisa's good heart repel the curse. Instead, the queen resorts to blackening Elisa's face and dirtying her hair, making her unrecognisable. She also attempts to turn the eleven princes into black, ugly birds, but because of their good hearts, the curse is only partly successful: they turn into beautiful white swans.The queen chases them out of the castle, and the next morning, Elisa is chased out as well because her father didn't recognise her. Left with nothing, she sets out to find her brothers. After many years, she finally finds them, and after learning from a crow that the curse can be broken, she has to knit eleven sweaters out of tall, burning nettles, and has to remain silent and not be distracted.While she works on the sweaters, she meets a prince who falls in love with her and lets her live in his castle. Here, an archbishop conspires with the prince's fiancé, his (the archbishop's) niece, to get rid of her by making people think she is a witch. She is almost burnt on the stake, but at the last second, her brothers come to the rescue. She throws the sweaters over them, the curse is broken, and she is able to tell her story and return the prince's love.
