Beutolomäus and Sascha are looking for the Christmas bell, a rare plant. A special elixir can be made from it. Beutolomäus hopes that Sascha will be able to hear and collect the children's wishes with the help of this remedy. However, the miracle plant grows in the garden of the biggest curmudgeon far and wide, Knorre, the instrument maker. He promptly catches Beutolomäus and Sascha in his garden.