Cerulean City is where all the action is: Misty's sister Daisy is back, Butch and Cassidy are coming to steal a Delcatty, and both Tracey and Casey, the baseball-loving Trainer from Johto, are visiting the Cerulean Gym. They're there when a Pelipper delivers a letter to Misty, asking her to meet someone named Georgio by the lighthouse.