After defeating Conway, Ash has now progressed to the Top 8 in the Sinnoh League, and it's finally time for him to go up against Paul in the Sinnoh League battle promised after Monferno's evolution. With the return of Gliscor, Ash decides to use the same Pokémon he used in his full battle with Paul at Lake Acuity, determined to show that they have grown considerably since then. The time has come; will Ash finally be able to defeat the rival he made when he first set foot in the Sinnoh Region, and progress even further in the tournament?

Ash and Paul's battle in the Sinnoh League quarter-finals rages on as both trainers give it their all. Eventually, both Ash and Paul have just one Pokémon remaining; Infernape for Ash and Electivire for Paul. Which trainer will emerge victorious in this decisive battle and move on to the semi-finals?