The Chikorita Challenge (Johto Journeys, Pokemon Chapter Books #21)

Ash thinks it's cool that Chikorita has joined the Pokemon team. But the newest member of his Pokemon posse is jealous of Pikachu. So the ticked off Chikorita takes off on a journey way beyond the Poke Ball. And that could get very dangerous! Will Pikachu and Ash find Chikorita before Team Rocket gets their paws on the Grass Pokemon?