On the way to meet Clemont in Lumiose City, our heroes run into their friend Tierno from summer camp! A Team Rocket robot quickly interrupts the happy reunion when it grabs Ash's Sliggoo and Tierno's Raichu and Wartortle and carts them back to the villains. But Jessie is annoyed that their "Automatic Pikachu Catcher" malfunctioned and sends it flying, allowing the Pokemon to escape. When Team Rocket comes after Pikachu again, Sliggoo bravely steps up to protect it--and when their robot explodes and starts a fire, Sliggoo evolves into Goodra to put out the flames with a powerful Rain Dance before sending the villains blasting off again! Finally, Ash and Tierno get to have the Double Battle they've been planning. Raichu and Wartortle are formidable opponents, but the team of Pikachu and Goodra proves too much for them, and Ash wins! Tierno wishes Ash luck in the Gym battle and heads off to continue his own journey, and our heroes finally have Lumiose City within their sights!