Primáček and his friends wake up the children every morning to watch fairy tales. It would seem that his life is monotonous, but the opposite is true! One day, a mysterious intruder sneaks into his house. And in the morning, Primaček's key is missing, with which this fairy-tale creature, similar to an alarm clock, reaches out. But that's not all! It turns out that the key is important not only for the Primarch, but for all people and the inhabitants of the realm of fairy tales. An adventurous hunt for the thief begins, not only in all corners of the earth, but also in space! The book was based on popular characters from the children's show TV Prima and is intended for children aged 5 and up.