The wicked robber Hotzenplotz was the terror of the village. Whatever he wanted he stole and he was always armed with a sword, a pistol and seven knives. Then he took Grandmother's musical coffee mill and Kasperl and Seppel just had to do something about it. But the ingenious plan misfired and robber Hotzenplotz captured them both. When Kasperl was sold to the great magician Petrosilius Zackleman there seemed no way of disentangling themselves from such a fix...