S15·E26 Battling the Leaf Thieves!

During a practice match against Iris' Emolga, Ash's Swadloon evolves into Leavanny. Leavanny's leaf-sewing process causes it to make costumes for the other Pokémon, but this causes Axew to be accidentally kidnapped by a pair of Durant who are building a den. They stop to think about how they are going to enter the Durant's den, and to be able to rescue Axew.