Pokemon the Series: Ruby & Sapphire Season 603 Episode 2 Seeing Is Believing!

Despite protests from just about everyone (including renowned Pokemon field researcher Professor Birch) that her prized Pokemon is a Cascoon, Jessie remains convinced that it's really a Silcoon on the verge of evolving into a Beautifly. In order to accelerate this Evolution, she seeks help not only from her Team Rocket cohorts, but even from Ash and friends. When the long-awaited Evolution finally comes and her Pokemon emerges not as a Beautifly but as a Dustox, James and Meowth--who have witnessed her fiery temper on many an occasion--shrink back in terror of the tantrum that is sure to ensue. Meanwhile, Ash and friends work to find a home for a group of Seedot displaced by a landslide, and May's Pokemon--who really is a Silcoon--evolves into a Beautifly!