Uncle MacRuffmantosh is hot on the trail of the Helmet of Victory! He's chartered a train scheduled to arrive at the helmet's hidden location - but the train is riddled with riddles. Ruff sends the six FETCHers to figure out the riddles on the train, which will unlock a mysterious briefcase. But there are others who won't stop until THEY get the briefcase. Will the FETCHers be able to stop them? And will they be able to stop the TRAIN before it crashes into a river?