Ash and Paul's battle in this episode follows the same ruleset as their first battle in Rival Battle! Three vs. Three!! (2006), being a three-on-three battle where the first one to win two rounds is the winner. Coincidentally, this battle takes place at Professor Oak's Laboratory, while their first battle took place at Professor Rowan's laboratory.
Ash has a three-on-three battle with Paul and wins.
This episode marks the first physical appearance of several of Ash's Pokémon after long absences:
- Kingler, who last appeared in Okido Laboratory! All Members Assemble! (2005).
- Noctowl and Glalie, both of whom last appeared in Trick Room of Terror! Satoshi vs Kohei!! (2010).
- Gliscor, who last appeared in Full Battle! Shinji vs Satoshi!!: Part Two (2010).
- Swellow, Sceptile, Torkoal, and Gible, all of whom last appeared in The Semi-Final Frontier! (2010).
- Staraptor and Torterra, both of whom last appeared in Memories Are Made of Bliss! (2010).
- Unfezant, Snivy, Scraggy, Leavanny, Palpitoad, and Boldore, all of whom last appeared in My Dream, Pokémon Master!! (2013).
Ash's Gengar and Lucario learn the moves Will-O-Wisp and Bullet Punch, respectively. In addition, Ash's Infernape is revealed to have learned the move Fire Punch
Ash meets up with Paul again, with Goh meeting him for the first time. In the process, Paul is revealed to have traveled to the Kanto region and to have met Professor Oak.