At Indigo Plateau, the members of the Kanto Elite Four, Lance, Bruno, Lorelei, and Agatha, emerge from their personal chambers. They prepare to take their positions for a new challenger, who has managed to collect eight Gym Badges, a feat that hasn't been seen in a long time. Lorelei gloats to Agatha that she'll defeat the challenger before her, while Bruno cracks his knuckles and grins. Lance tells everyone to prepare themselves, looking forward to seeing how strong the challenger will be. As the Elite Four members take their places in their respective rooms, outside the Pokémon League, the challenger, Blue, approaches the building, proclaiming himself to be the greatest Pokémon Trainer in the world.
Blue enters Lorelei's room, where the Ice-type expert welcomes him to the Pokémon League. The battle advances, with Blue's Alakazam eventually facing Lorelei's Lapras. The Transport Pokémon attempts to use Body Slam, but the Psi Pokémon easily dodges the attack with Teleport. As Lapras frantically tries to locate its opponent, it suddenly gets lifted into air by a Psychic attack, soon sending the bulky Pokémon hurtling into the floor and defeating it. Blue gloats about his geniusness as Lorelei reluctantly lets him move forward.
Next, Blue faces Bruno. The Fighting-type expert tells Blue to show him his Pokémon, before letting out a roar of determination. Unfazed, Blue hopes Bruno to give him at least a bit more of a challenge. The battle commences, finally leading to Blue's Pidgeot confronting Bruno's Machamp. The Superpower Pokémon does its best to block Pidgeot's Wing Attack, but the super effective attack quickly overpowers Machamp, sending it flying straight into Bruno and both of them into the wall. Bruno is shocked by his loss as Blue walks past him towards the next room, scoffing at the lack of challenge and gloating that he and his Pokémon haven't even nearly gotten serious yet.
Now facing up against the Ghost-type expert Agatha, Blue defeats her Arbok with his Rhydon. Recalling her defeated Pokémon, Agatha compliments on Blue's skills. Blue says that everything is going according to his plan, and Agatha admits that since he's the grandson of "that old coot", she had thought he'd focus on completing the Pokédex. Blue angrily snaps at Agatha not to compare him to his grandfather, saying that for him, gathering data for the Pokédex is just a tool to become stronger. Opening the Poké Ball embedded on her walking stick, Agatha calls out her last Pokémon, Gengar.
Moving on to the final room, Blue now comes face to face with the leader of the Elite Four, Lance, declaring that he'll defeat him and claim himself the Champion throne. Starting the battle, the Dragon-type master calls out his Dragonite, while Blue sends out his Blastoise. Both Pokémon attack simultaneously, Dragonite with Flamethrower and Blastoise with Hydro Pump. Both attacks score direct hits, with Lance complimenting the power of Blastoise's attack. Determined to finish the battle, Blue has Blastoise continue the assault with Skull Bash, and Lance responds in kind, with the two Pokémon clashing in the middle of the battlefield.
In the dark, unlit Champion's room, Blue is now sitting on a throne, having finally claimed himself the title of Pokémon League Champion. However, another person soon walks into the room, which Blue had been expecting. As the person enters and the room lights up, Blue stands up from his throne, welcoming his rival Red.