Ep 1. Enter Elesa, Electrifying Gym Leader!

Ash and his friends arrive in Nimbasa City and are thrilled to see the amusement park, but their excitement dies down when they realize that the city's Gym Leader, Elesa, is not present at the gym. After some investigation, they meet an electrician named Benny, who reveals that Elesa is actually a famous model and fashion designer. The group visits Elesa's boutique, where they get to meet her and her Emolga, who has a bit of an attitude problem.

Elesa reveals that she indeed is the city's Gym Leader and agrees to battle Ash. Ash sends out his Tepig, but its fire-based attacks prove to be ineffective against Elesa's Emolga. To make matters worse, Emolga has the ability to fly and avoid Tepig’s attacks. After losing the battle, Ash realizes his Tepig needs more training and experience. Meanwhile, Team Rocket tries to steal Elesa's expensive clothing, but are stopped by Ash and his companions.

Despite the loss, Ash is determined to challenge Elesa again. So, to get stronger, he and his friends decide to check out the battle subway where they face some tough opponents. They also meet a mysterious Trainer named Subway Boss Ingo who offers Ash a chance to battle him on the train. Ash agrees and eventually wins the battle. Meanwhile, Team Rocket comes up with a new plan to embarrass Elesa, but their plan is foiled by Ash and his friends.

The day of Ash's rematch with Elesa arrives, and this time he comes prepared. He uses his Palpitoad and Pikachu who together manage to outsmart Emolga and take the win. Elesa is impressed with Ash's strategy and suggests that he participate in the upcoming Nimbasa City Pokémon Tournament. Ash and his friends decide to accept the challenge.

Overall, Enter Elesa, Electrifying Gym Leader! is a great introduction to the city of Nimbasa and its unique Gym Leader. It is a classic Pokémon episode with exciting battles, interesting characters, and a bit of comedy thrown in. Fans of the show should definitely check out this episode and follow Ash's journey to becoming the best Pokémon Trainer in the Unova region.