A Sappy Ending

On the way to Violet City, Ash and friends come across a forest where Pinsir and Heracross are normally separated by a river into their own sections of the forest. However, something has happened in Pinsir's side of the forest, causing them to migrate to the Heracross part of the forest and stir up trouble. Ash and friends, along with a forest ranger named Woodrow and a friendly Heracross set out to find out why the Pinsir are leaving their part of the forest.