On their way to Saffron City, Ash and friends are accused of breaking into a lab by a kid named Xander and a man named Dr. Gordon. After they are set free Team Rocket breaks in and tries to steal some of the Doctor's inventions. Jessie drops a briefcase and a bunch of blue candy drops on the ground which Xander's friend Caterpie eats. It grows to an enormous size and goes and climbs to the top of the radio tower in town. While Ash and friends try to figure out how to make is small again, Jessie and James show up again and use the candy to make Cacnea and Dustox larger than life... (thetvdb.com)