FETCH! with Ruff Ruffman

How to Really Train Your Dog (4x19)

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Feeling that he is close to finding the Helmet of Victory, Uncle MacRuffmantosh charters a train that will take them to the helmet's hidden location. However, the train is full of riddles, so Ruff sends all 6 FETCHers to solve the train's riddles and unlock a mysterious briefcase.