Synopse

10-year-old Robby is glad to find some friends right after he has moved into the new neighbourhood: Alexander, his little sister Lilly and Hedwig. All of them are having trouble with that mean caretaker Franz Bommer and that welds together. The four children make a cute discovery with the little dog Mozart that has stolen candy from the supermarket. They cannot know at that point in time that Mozart has inherited lots of money from his mistress. And the loyal housekeeper Mimi Klopfenstein takes care of their four-legged friend. But all of a sudden the disowned son shows up with a nasty plan: To get hold of his mother's fortune he wants to get Mozart and Mimi out of the way. His plan will not work out though, thanks to the four children Alexander, Robby, Hedwig and Lilly.

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