Ash and the group have finally made their way to the city of Trovitopolis, which should lead them right to Trovita Island and the next Orange League gym! Everything seems normal until the earth cracks right beneath their feet and they find themselves in the sewer underground, and not alone. There seems to be some sort of a "monster" living there that has been terrorizing the town. Will Ash, Misty and Tracey be able to find it, before it finds them?
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