Fix and Foxi think Uncle Fax is trying to sell their lovely house. Their anti-sale action is ingenious - they destroy the house so badly that every buyer is terrified. Fix and Foxi are shocked when they understand that Fax doesn't want to sell the house. Now they have to fix everything quickly and Lupo has to distract Uncle Fax until then. Actually Fix and Foxi wanted to buy a normal goldfish. But the little fish develops a huge appetite, grows continuously and is a real problem. Lupo cheats at the Fuchsburg bicycle race. No wonder, because the main prize is lots of delicious tarts. Can Lupo win against Fix and Foxi and Lupinchen? Lucky finds a magic stone that is said to be able to fulfill three wishes. With the first wish the children test whether the stone really has magic power. When it works, the Pepperkorn family begins to worry about what to wish for.