On the way to Eterna City, our heroes visit a Pokémon Center where they meet young Paige and her big sister Marnie, the daughters of the local Nurse Joy! Ash and his pals get their first good look at Drifloon—Marnie has three, which she uses to help her deliver lunch to her father while Paige takes the gang to meet Pokémon in the surrounding forest. Paige also reveals she and Marnie have a secret friend, none other than the legendary Suicune!
Marnie's father and his Ampharos are working at the Valley Windworks Power Plant. Team Rocket tries to steal Ampharos, only to be shocked by Ampharos's Thunder. But the resulting explosion damages the Windworks, and when the lights go out at the Pokémon Center, Nurse Joy sets out for the Windworks to see what's wrong. Paige wants to take her Drifloon and follow; Pikachu tries to stop her, but a gust sweeps all three of them away!
Ash and his friends race to the Windworks to try and intercept them, except a looming storm blows Paige and Pikachu way off course. Ash finds them with the help of Marnie's Drifloon, but they're stuck up among the rocks and there's no way the others can reach them on foot any time soon. Marnie is determined to save her sister no matter what, so she asks Suicune to appear and help her. Suicune responds and quickly takes her to Ash and Paige, then brings everyone back to safety. With Nurse Joy's family reunited and the Windworks Power Plant fixed, our heroes can call it a day!