Once upon a time there lived a king who was deeply in love with a princess, but she could not marry anyone, because she was under an enchantment. So the King set out to seek a fairy, and asked what he could do to win the Princess's love. The Fairy said to him:
"You know that the Princess has a great cat which she is very fond of. Whoever is clever enough to tread on that cat's tail is the man she is destined to marry."