There once was an enchantress who had 3 sons. She was worried they would try to take her power, so she transformed the eldest into an eagle, the middle into a whale, and the youngest ran away before she could cast a spell on him.
The third son had heard tales about the King's daughter who was trapped in her castle. Many had failed to rescue her, but the third son was determined to find her castle and try to rescue her anyway.
When the boy found the princess, she was not what he expected. She was hideous! She told him that the only way to rid her of this curse was to find the crystal ball and hold it in front of her. To do that he would have to kill the wild bull that was down the hill, and then obtain the egg from the fiery bird that would come from the killed bull.
After defeating the bull, a firery red bird appeared, just as the maiden said. The bird almost flew away with the egg containing the crystal ball, but the boy's brother, the eagle, swooped in to stop the bird. The bird dropped the egg and it almost landed in the ocean!
Then with the help of his other brother, the whale, the egg didn't land in the water but instead the boy caught it. Inside the egg he found the crystal ball, just like maiden said he would. He took the ball and headed back to the princess.
When the boy got back to the castle, he held the crystal ball in front of the princess, and she turned more beautiful than he could have imagined! He asked for her hand in marriage and she joyfully accepted! And also because of the crystal ball's magic, the spell on the boy's brothers broke and they were returned to their human form!