At the lakeside, the prince encounters a magnificent flock of swans. In awe, he aims his crossbow when suddenly one of the swans is transformed into a beautiful woman. The prince is captivated by her soulful countenance and starts to approach her, but she becomes frightened and turns from him. When he assures her that he means no harm, Odette reveals to him that she and her companions have been placed under a spell by the wicked Von Rothbart. By day they are condemned to take the form of swans and only at night can they regain their human shapes. This spell can only be broken if a man promises his love and remains faithful to that vow.