 A wicked Queen marries a king with 13 wonderful children. She then casts an evil spell on the children that turns the 12 boys into swans and banishes the only daughter, Lisa, from the kingdom. Lisa searches for her brothers, finally finding them, then seeks to undo the terrible spell cast upon them. With much difficulty saving her brothers, she must take a vow of silence and for that reason, almost loses her own chance for happiness.