This is the story of "Satoshi", a boy who wants to be the best at Pokémon battling, and "Go", a boy who dreams of getting every Pokémon. Let's Go! To the Pokémon World! With our dreams and adventures!
The Rocket Gang Nyarth is laid up with a cold. Musashi and Kojiro, who have thus far been relying on his interpretations to understand what Satoshi's Pikachu talks about, decide to take the opportunity to train themselves so they can understand it on their own! They watch video footage of Pikachu that they've secretly recorded and dub over it, but...?! / In a forest after a rainfall, Satoshi and Go encounter Numacraw that are stuck in the ground! And while they're trying to do something to help them, a Runpappa appears?!