The overbearing mayor of Zeréndvár is afraid of animals and fears sicknesses. He wants to collect all domestic animals and pets - dogs, cats, rodents and parrots. Who can help the children, when the parents are afraid of the mayor?

Attila, the little genius, through linking the computer and the holograph, brings Pál Kinizsi, the one-time commander of King Matthias, into life again. The revival presents a great shock for the wild, medieval soldier. In turn, the citizens of Zeréndvár all agape with wonder at Kinizsi's behaviour and extraordinary strength.

In co-operation with the children, Kinizsi hinders the gathering of the animals, chases the mayor away, and returns to the past.
(In 2002 a TV-film was made on the basis of the novel.)