Pokemon: Diamond and Pearl adventure!

"As they journey through the land of Sinnoh, Hareta and his partner Piplup grow stronger every day--while ruining Team Galactic's schemes and getting into plenty of Pokemon battles along the way!"--Cover.

Hareta, raised in the wild by Pokémon, decides to become a Pokémon trainer. Along with his first Pokémon Piplup and his new friend Mitsumi, he sets off in search of the legendary Pokémon Dialga, but Team Galactic is hunting for Dialga too.