It is time for Ash to have his rematch with Brawly. He decides to shake things up a little by using his new Corphish instead of Taillow on a new battlefield. With all the training Ash had to do up to this point, does he have what it takes to beat Brawly, or will he wipe out again and be all for nothing?

After arriving to Slateport City, May begins her training for the Contest. However, just as she and Beautifly have some good results, a boy named Drew appears and starts belittling May. May does not give up and has a battle with Ash. Despite losing, a man named Mr. Big appears and teaches May about Contests. He takes them to the shop, where he finds May's Torchic had eaten his Bluk Berry, which is to be used in tonight's firework event. In order to make amends, May goes with her friends in search for the berry.