The Twinleaf Town Festival has concluded, and Ash and friends continue their journey to the town hosting Dawn’s next Pokémon Contest. The three soon fall into yet another one of Team Rocket’s traps. However, things are not what they seem. A mischievous Togepi stirs up trouble for everyone and in the end they must work together in order to stop Togepi.

Ash and friends find out that the main event for the Twinleaf Town Festival is a battle tournament, and the winner gets to have a battle with the Sinnoh Battle Frontier Brain, Palmer. Excited about that, Ash enters the tournament with hopes of battling him.

Ash and friends are enjoying the festivities of the Twinleaf Festival, when they suddenly run into Barry. Wanting to see how Ash has improved, Barry challenges him to a battle. Plans are put on hold, however, when Barry sees the mysterious Xatu fly by and decides to follow it. Ash and Dawn go after him, and they all arrive at a solitary festival tent with Psychic-type Pokémon performing out front. Before they can think to do much, a clown comes out of the tent and beckons them toward it, where they’re hit by a bright flash of light and put to sleep. When Ash, Dawn, and Barry awaken, they’re separated from their Pokémon and each other, and to make matters worse, they were somehow shrunk down to the size of a small Pokémon! Will Ash and the others be able to find each other and return to their normal sizes? And what connection does this certain Natu have with the whole situation?

After Dawn’s loss to Johanna, Ash and friends are pleasantly surprised to hear that Professor Oak will be arriving soon to begin the Twinleaf Town Festival with one of his lectures. Trouble starts brewing, however, as Oak is running late, and Team Rocket is taking advantage of that by taking over the lecture with an old plan: to disguise James as the professor to steal Pokémon. Will Ash, Dawn, and Brock be able to find him in time to stop Team Rocket? And what do Politoed and Quagsire want with Oak?