The team is on Camomile Island, en route to May's next Pokémon Contest on Chrysanthemum Island. Everyone lets their Pokémon out to have some fun. When Ash's Donphan tries to play with some young Rhyhorn, its intentions are misunderstood and soon Ash and his friends are running from a Rhyhorn stampede! Nurse Joy and her Meganium come to the rescue, except Grovyle then picks a fight with a Tropius and Meganium has to calm things down once more.
Team Rocket wants Meowth to recruit Tropius, and Tropius agrees—if Meganium comes along. Tropius is in love with Meganium, but so Grovyle, and it's not happy about losing. So when Team Rocket attacks the Pokémon Center and steals Meganium, Grovyle has already left for a rematch with Tropius. Love powers Grovyle to victory but when Team Rocket returns, Meganium only has eyes for Tropius. Poor Grovyle is devastated.
Ash and his friends arrive on the scene, and even Team Rocket has to help explain Grovyle's romantic woes to Ash. Team Rocket then kidnaps Tropius too, and Grovyle evolves into Sceptile to stop them. However, Sceptile's moves are all a bust! Pikachu comes to the rescue, and Tropius and Meganium combine to defeat Team Rocket. The two Pokémon are clearly a couple, but it looks like Sceptile may not recover from its broken heart!