Swans (1990)

Once upon a time, there lived a widowed King with 12 children: 11 sons and 1 daughter named Lisa. The children were used to living happy, carefree lives and always having fun playing with each other. One day the King decided to remarry. When he brought his new wife home, the children immediately noticed that their new mother was cold hearted, wicked, and cruel to them. Soon after her arrival, it is revealed that she is an evil witch. She casts a spell on the eleven brothers that transforms them into swans. After Lisa is bestowed with a curse of her own, she vows to find her brothers and save them from their curses. But that is going to take more strength and determination than Lisa ever dreamed of, which she soon discovers after running into a mysterious crow who tells her how to save her brothers...