Ash and friends arrive at the National Park where the Bug Catching Contest is about to start. They reunite with Casey who is also competing. As the contest starts, Ash and Casey decide to see who can get the best pokemon. Meanwhile, when Team Rocket is denied entry into the competition, they steal the costume of one of the employees and sneak into the park. When their plan fails, they resort to their old ways and prepare a trap to catch Pikachu.