With the Clubsplosion Tournament behind them, Ash and co. set out for Icirrus City once again. During a battle, Ash's Swadloon evolves into Leavanny, and gains a habit of making clothes out of leaves. However, his clothes make some Durant mistake Iris' Axew for food and kidnaps him. Will Ash and co. get Axew back, and can Leavanny keep its habit under control?
Like the Greek legend of "Theseus and the Minotaur", Leavanny used its own thread to attach the wall and make a trail from the Durant den entrance so that Ash and co. could find their way out through a tunnel-like labyrinth.