Ash and friends arrive at Navel Island and meet Danny (who Misty gets a crush on), a fellow Pokémon trainer who wanted to challenge the Navel Gym Leader. To do so, he and Ash had to climb a mountain without the aid of their Pokémon, or risk disqualification. After a long climb Danny reveals himself to be the Navel Gym Leader and since Ash did the required task, he passed the test and earned the right to challenge Danny. The challenge (Like Cissy's gym) was different than a normal Pokémon battle. The first task was to freeze a geyser with an Ice Beam attack. Ash chose Lapras while Danny chose Nidoqueen. Both fought hard but eventually Nidoqueen won. The next task was to take said geyser and carve a makeshift bobsled. Danny chose his Machoke, Scyther and Nidoqueen while Ash chose Bulbasaur, Pikachu and (unfortunately) Charizard. Charizard decides to help Ash to used Flamethrower to carve the ice perfectly into a bobsled, winning Ash the round. The final challenge was a race down the mountain. Danny had a strong lead but in the end Ash won thus earning him the Sea-Ruby Badge. After saying their goodbyes Ash and co. continued their journey.
Though Tracey never met it, he and Misty exclamed "Not Charizard!"
The "Who's that Pokémon?" in this episode is Exeggcute.
The rules for the Naval Island Gym Challenge were as follows:
You can use any Pokémon in your team
You cannot use your Pokémon during the first part of the challenge or you'll be disqualified.
First to win best two out of three wins.
The Challenge is broken into four parts:
Climb to the top of the mountain without the aid of your Pokémon
Once at the top, Use a gusher and any Pokémon that knows Ice Beam to freeze it.
Use your Pokémon to carve the ice log into a bobsled.