S15·E41 Iris and the Rogue Dragonite!

When the power goes out in Undella Town, the gang tries to help out when they discover a rampaging Dragonite may be to blame. When Iris discovers the Dragonite, she believes it is truly not bad but she is soon trapped in the room with the Dragonite along with Ash's Oshawott and Dawn's Piplup.