Thomas & Friends: All Engines Go! Season 1 Episode 25 Roller Coasting Episode Title: Roller Coasting Episode Description: A carnival arrives on Sodor and the roller coaster is leaving Percy in a very nervous fit, leaving Thomas, Nia, and Kana to help him get over his fear. When he goes through a number of lines likened to a roller coaster by his friends, though, Percy learns that a tough challenge can be prepared for by practicing it one part at a time.