Pokémon Adventures, Vol. 5 (2nd Edition) by Hidenori Kusaka

Pokémon trainer Red has vanished... Trainer Yellow Caballero and Red's faithful Pikachu are off to rescue him. But it will take smarts, skills, and a lot of help from friends and other Pokémon to find and rescue Red! And watch out for the Elite Four, Yellow Caballero... Are you a strong enough Pokémon trainer to defeat all of them?