Oliver

How do planes fly? How does our fridge work? Can I breathe underwater like a fish? Oliver is a curious explorer, so he asks a lot of questions. Then, one day in the bathtub, he hears a strange gurgle. “What lives down the drain?” he wonders. Soon Oliver is headed down the drain in his homemade submarine on a spectacular mission. But will this clever inventor be able to discover a way back?

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