The gang arrives to Lilycove City and May sees a sign of the Pokémon Contest, so she plans to win the third ribbon. As they walk, Pikachu is super happy and goes somewhere. The gang appears to a market dealing in berries. They hear a girl complaining about the prices of berries to a merchant. A man appears, offering the berries. Pikachu eats and Ash follows him, but the berry is sour. Ash eats another one, making the taste less sour. The girl comes and trips over, and the berries are about to be crashed, but the Pokémon she got uses Psychic and saves the berries. Max identifies the Pokémon as Grumpig.
Everyone claps for the performance and May realizes the girl (who introduces herself as Kelly) is a Pokémon Coordinator. The gang introduces themselves, while Team Rocket spies to get Grumpig. Kelly says to them she gives Grumpig the best berries which she makes a Pokéblock. Max says she won't get the 3rd ribbon, so Kelly and Grumpig tickle her, so she shows the two ribbons she got already. Kelly and May are determined to win the Lilycove ribbon. Brock asks Kelly for the Omelette restaurant, but Kelly says they shouldn't go there. Instead, she advises them to go to her house, as her mother cooks better. Her home is a Pokéblock shop, full of many various PokéBlocks.
Kelly's mother arrives and Kelly introduces her friends to her. They all go to eat some of her food, saying it is the famous Lilycove stew. Kelly's mother goes away, while Kelly will show May the shop. Ash goes to training for his next Gym Battle, wanting Swellow to learn how to use Aerial Ace. Kelly's mother shows May, Max and Brock how Pokéblocks are made - some ingredients are put in the blender and the blender cuts the ingredients. Swellow attempts to use Aerial Ace, but hits itself in the ground. A man appears and introduces himself as Vladimir "the Attacker", saying he can teach Pokémon any attack. Max, Ash, Pikachu and Swellow bow down to him, wanting Vladimir to teach Swellow Aerial Ace. Vladimir spots the determination, so agrees to train it.
They arrive to a training field. Pidgeotto uses Aerial Ace, so Vladimir tells them the secret - the Pokémon dives high up and goes down, staying low to the ground. The second part is that Pokémon speeds up and rushes, making it seem it disappeared. The last part is that the Pokémon must go with full speed to attack the opponent, so Pidgeotto destroys one of the targets. Ash, Vladimir and Max place the ramp. Swellow goes up and dives, going underneath the ramp. They place the ramp lower, but Swellow gets hurt, however it is still determined to be trained. May chopped the berries and puts them in the blender. Kelly tells that she tests on her Pokémon the PokéBlocks until it is perfect. Kelly eats the Pokéblock, but it is weak.
Brock and Kelly tell her she needs to use more berries. Kelly says she needs to keep notes which berries she used. May's Pokémon try the berries and they don't find it delicious (except Beautifly). May wonders if Kelly experimented or did her mom give the recipes, so Kelly says that mother didn't give any recipe, leaving Kelly to experiment. Kelly thinks she will take the family business, maybe even teach people the art of Pokéblocks. Kelly thinks May will become a Top Coordinator or an Instructor, but May says she will travel with her Pokémon until she decides next. May swears that her Pokémon will do their best, so Kelly tells her the same. Suddenly, Grumpig is taken by Team Rocket. Combusken uses Sky Uppercut, cutting the balloon.
Bulbasuar grabs Grumpig with Vine Whip and Beautifly uses Silver Wind, blasting Team Rocket off. Kelly thanks May for the rescue, so May thinks she'll use Combusken for the Contest. Team Rocket landed in a trash can, so Jessie sees the Pokémon Contest. Jessie will enter the Contest with James' Chimecho. When he refuses to, he is reminded that Jessie borrowed her Dustox for the PokéRinger Contest, so will give her his Pokémon. The Contest is about to begin - the announcer introduces the judges. Ash has to go to teach Swellow Aerial Ace. May and Kelly wish each other luck. Jessie intimidates Chimecho to win or else. The first participant is May and she sends Combusken. Combusken uses Fire Spin, but goes out of control. Everyone sees the attack, so what will May do to protect herself?
- The dub title is a reference to the phrase "Lock, stock, and barrel".
- James references Jessiebelle when Jessie asks if James noticed the Grumpig. James responds, "If you mean it looks like my ex-fiancée then yes."
- Though Vladimir acts as a Move Tutor in the anime, in the games, Lilycove City has a Move deleter.
- Vladimir's title as "Vladimir the Attacker" may be a reference to the historical figure "Vlad the Impaler".
- As the gang walks up to the Berry stand towards the beginning of the episode, the vendor is being heard to be yelling the names of real-life berries: strawberries, blueberries. etc. What can be seen in the stall however, are only Pokémon Berries such as Pecha and Rawst Berries.
- In the "Pokémon Trainer's Choice" Makuhita would be a poor choice to battle Spoink as Fighting types are weak against Psychic types. The best choice would have been Swampert.