The first book in the internationally popular Dayan Collection is now available in English for the first time! After leaving the birthday party of one of his friends, Dayan the cat wonders what the meaning of a birthday is. After visiting three witches who figure out when his birthday is, Dayan throws a birthday party for himself, but forgets to invite the witches. When the witches find out, they turn Dayan into a kitten. Will Dayan and his friends be able to reverse the witches spell?