Pokémon — Episode 2: Once There Were Greenfields

You are watching the episode Once There Were Greenfields Gardenia reappears in a town, organizing a special exhibition battle for the town's children. She teams herself with James of Team Rocket in a match against Ash and Dawn. She proposes that James should leave his Cacnea with her to train when he is unable to use it to its full potential. He eventually decides to accept the offer.