A town in the Johto region starts to experience endless nights. Ash and Goh decide to investigate the phenomenon. Once there, the two boys meet a young girl named Kirara, who enjoys watching the stars as it reminds her of her Cleffa that recently became a star. After hearing a description of the Pokémon Kirara had seen, Goh believes an Unown is causing it to be dark. Ash and Goh head to a museum and meet up with Cynthia, who is also investigating the town's situation and asks to speak with Kirara. Kirara reveals that she had made a wish for her to be able to watch the stars forever. A group of Unown that had been listening nearby granted her wish. Kirara realizes the trouble she has caused and reassures her Cleffa that she'll be okay. (Source: Wikipedia)