Scientists genetically create a new Pokémon, Mewtwo, but the results are horrific and disastrous.

A crystal catastrophe is unleased upon Greenfield, and Ash, Pikachu, and friends must figure out how to undo the damage to the once-beautiful town. But the unthinkable happens when Ash's mother is kidnapped by the powerful Entei, a Pokémon thought to have existed only in legend. Now Ash must go to her rescue, uncertain of what he'll uncover when he unlocks the real secret power behind the unbelievable turn of events: a young girl whose dream world...

When our heroes encounter the ruthless Pokémon Hunter J, they are forced into an unusual alliance to deal with the threat!

On their way to Hearthome City, our heroes cross paths with Cynthia, the Champion of the Sinnoh League-and she's battling Ash's rival Paul!

In the Floaroma Pokémon Contest, Dawn finds herself facing off against not only "Jessilina" (Team Rocket's Jessie in disguise) but also her old friend Kenny!

Our heroes discover the Pokémon Dress-Up Contest, a unique event where Pokémon compete by disguising themselves as other kinds of Pokémon!

Our heroes pass through a mysterious gate and are sent to a strange place where all their dreams seem to be coming true-courtesy of a mischievous Mismagius!

After Team Rocket makes off with Ash's Pikachu once again, a feisty Turtwig appears to rescue Pikachu and later takes a bit of time to warm up to our heroes.

When our heroes arrive in Eterna City for Ash's next Gym battle, they witness the aftermath of a major theft at the local museum of history!

Dawn has her very first battle with Nando, a Pokémon bard who's torn between two possible paths on his journey.