On the outskirts of a small town, our heroes run into a young boy named Bucky. He tells our friends of his woes in trying to capture a Dunsparce. It seems the Dunsparce are indeed sparse in this area, at least they are now. When Bucky was out of town visiting his grandpa, a swarm of them came through and every kid in town caught one. Although Bucky still tries to participate in the Dunsparce games by using his Caterpie, Caterpie just can't compete. While Ash and Co. make good on their promise to help Bucky find one of these snake-like Pokémon, Team Rocket pulls a scheme in town to rid the children of their Dunsparce. Will Team Rocket get away with the Poké-napping this time or will our heroes, joined by their new friend, Bucky, be able to triumph over Team Rocket and spare the Dunsparce?