After arriving at Canalave City, Ash can't wait to have a Gym Battle. Unfortunately, the Gym Leader's son Roark has dropped by for a visit and he and Gym Leader are in a big argument. They jump right in and find the Gym Leader Byron and are shocked to see Roark, who found out that he is Byron's son. To make matters worse, they're arguing about who loves fossil more. Things get terrible when Team Rocket steals Byron's fossil collection. Will they be able to stop them? And can Byron and Roark stop arguing for more than 5 minutes and get along?