Episode 572 – Sleepless In Pre-Battle!

Episode Summary
Ash heads to the Canalave Gym for a battle, but the Gym Leader is not there, and all of his pupils are fast asleep. After bumping into Officer Jenny, they find out that the Legendary Pokémon Darkrai has forced a bunch of people in town to fall asleep and have nightmares; something needs to be done about it.