Pokemon: Pikachu Tanken Club

Pikachu, Piplup, Turtwig and their friends arrive at a river expecting a carefree day of swimming and games, only to discover that the water has disappeared. Meowth and Wobbuffet have come for the same reason and are just as disappointed by the dry riverbed.

The two groups race upstream to discover what stopped the flow, but the expedition soon scatters everyone in different directions. Finding one another, uncovering the cause and bringing the river back becomes a test of cooperation for Pokémon that would normally rather compete.