Ash sends Tauros back to Professor Oak's Lab and Ash lets him keep Heracross there, Brock meets Captain Aidan and Team Wartortle, The Squirtle Squad is reunited, Squirtle rejoins it's buddies on the Squirtle Squad
With Goldenrod City as their next destination, Ash and Co. press on. Ash sends his Tauros back to Professor Oak, which reduces his team to 5 Pokémon: Pikachu, Bulbasaur, Chikorita, Cyndaquil, and Squirtle, because he decides to keep Heracross at the lab. Later, they hear of a great firefighting competition and are greeted by an old friend: Captain Aidan and Team Wartortle. Brock was filled in by Misty of their encounter during their trips around the Orange Islands. Then, Squirtle notices it's old friends from the Squirtle Squad. Who will win this years Fire and Rescue Grand Prix? And will Squirtle stay with Ash or will Ash's team go from 5 to 4?
Misty filled Brock in on the events of OI025: The Pokémon Water War since he was absent for the whole Orange Islands series except for the first, and last, two episodes.
Togepi is colored incorrectly when everyone says goodbye to Squirtle.