Boomtown celebrates little King Rupert’s birthday with a big party – musicians, travelling entertainers and magicians included. But strange things are happening: Till Eulenspiegel’s grandfather Marcus vanishes for good during a magic trick and the town’s birthday present for the little king, a golden egg, gets lost in the confusion. The smart Till replaces it with a duck’s egg, out of which to Rupert’s excitement the small chick Ducky hatches shortly afterwards. The king is still not aware of his aunt Katharina trying to get him out of the way so that she herself can take the throne. In the meantime joker Till has three difficult riddles to solve in order to rescue his grandfather. Will Till and his friends be able to help grandpa Marcus and King Rupert?