Where To Stream Pokémon Season 1 Episode 21

As the group continue on their way, they notice a group of Butterfree out over the ocean. Brock informs Ash that it is the mating season for all of the Butterfree. Ash lets his Butterfree out to try and find a mate, but can he actually come to let his Butterfree go? Meanwhile, Team Rocket comes up with a plan to get all the Butterfree.