Within hte storyline, it begins on September 28.
- Sebastian debuts; Platinum debuts; Pearl debuts; Diamond debuts; Professor Rowan debuts; Mr. Berlitz debuts; Paka debuts; Uji debuts
- Pearl's Chatot debuts; Diamond's Munchlax debuts; Platinum's Piplup debuts; Diamond's Turtwig debuts; Pearl's Chimchar debuts; Platinum's Ponyta debuts
- Diamond and Pearl run into Professor Rowan and Mr. Berlitz, causing their letters to inadvertently get mixed
- Platinum meets Diamond and Pearl and gives them a Turtwig and Chimchar, believing them to be her bodyguards while they believe her to be a tour guide
- Diamond develops a crush on Platinum
- Platinum, Diamond, and Pearl leave for Mt. Coronet