Joy, Sadness and Bing Bong hatch a plan to ride the "Train of Thought" back to Headquarters and trek through the various parts of Riley's mind, unaware that Riley's life is slowly starting to crumble. She alienates both her parents and her former best friend, struggles in her new surroundings and quits hockey after failing to do well in the first tryout. Anger reasons that the only way to restore Riley's personality and keep the remaining islands from falling into the Memory Dump is to persuade her to run away to Minnesota