A Stand-Up Sit-Down! (Japanese: ヒカリとノゾミとダブルパフォーマンス！！Hikari, Nozomi and the Double Performance!!) is the 41st episode of the Diamond & Pearl series, and the 507th episode of the Pokémon anime. It first aired in Japan on July 26, 2007 and in the United States on December 15, 2007.
Dawn's latest training session is interrupted by a Glameow and Misdreavus that seem to be asking for help, and it's a safe bet that those Pokémon must belong to Zoey! Sure enough, the two Pokémon lead Dawn and her friends to Zoey, who's fallen and sprained her foot. Our heroes treat the sprain the best they can and help Zoey back to her campsite, where everyone is introduced to Zoey's new Shellos. That's when Zoey tells Dawn that the upcoming Hearthome Contest has a double performance format, which means Dawn has to show off two Pokémon at once!
Fortunately, Zoey offers to help Dawn train. First, she shows Dawn some of the combinations she has planned for Glameow and Shellos. Then Dawn tries to develop some combinations of her own with Pachirisu and Piplup, but it's even harder than she imagined. Things aren't any smoother when she tries a double battle with Buizel and Buneary against Pikachu and Aipom, but all Dawn can do is practice until her team gets it right.
Jessie, now disguised as Jessilina the Coordinator, drops in for a surprise visit and challenges Dawn to a double battle. Zoey's not about to let Jessilina pick on a double battle novice, so she accepts the challenge instead! Injured or not, Zoey still has all her skills intact—her Glameow and Shellos overcome Jessie's Dustox and Seviper with power and style. Zoey's example encourages Dawn to keep on trying, and the two Coordinators look forward to their next meeting at the Hearthome Contest!
Dawn is training in the woods with Piplup, when Zoey's Glameow and Misdreavus find them while searching for help for their Trainer. Zoey sprained her ankle while training, and is forced off her feet while she recovers. Brock gives her some first aid, but she needs to get to a Pokémon Center for full healing. They head to her camp and Zoey shows off her new Shellos, caught shortly after Dawn caught her Buizel. When Ash and Pikachu try to introduce themselves to Shellos, it gets very scared. Dawn lets her Buizel out, and it starts to stare at Shellos, making it even more frightened. Then Piplup starts arguing with Buizel until Dawn breaks them apart. When Zoey sees how poorly Buizel and Piplup are getting along, she decides to demonstrate to Dawn the theme of the upcoming HearthomeContest, appeals involving two of the Coordinator's Pokémon instead of one. Zoey shows how a Double Performance works in a video on her laptop. The video shows how Top CoordinatorMarina delivers a Double Performance using her Wani-Wani and Pink. Zoey tries to help Dawn by showing her a combination with her Glameow and her Shellos. First Zoey has Shellos firing a Mud Bomb into the air, which Glameow used Shock Wave on, dotting up Shellos's attack. Then Shellos uses Hidden Power to destroy the mud bombs and that results in a beautiful and flashy fireworks display.
Dawn decides to practice a bit for this new theme, pairing Piplup with Pachirisu and Buizel with Buneary. She starts off with telling Pachirisu to use Sweet Kiss and then she tells Piplup to use Whirlpool. Unfortunately the whirlpool covers up the hearts from the Sweet Kiss, and then she tells Pachirisu to use Discharge on the Whirlpool, but this combination fails too and it ends up zapping both Dawn and her Piplup. Dawn tries that combination for the second time, but it fails again cause Pachirisu's Discharge was too powerful and it evaporated Piplup's Whirlpool. Dawn is feeling really bad, and Ash tries helping her by suggesting she would do some Contest Battle training with him so that she can come up with some new combinations. Ash decides to go with his Pikachu and Aipom, while Dawn chooses her Buneary and Buizel. Ash starts off first by telling Aipom to use Swift and telling Pikachu to jump into the Swift with Quick Attack. Dawn notices that Aipom is left wide open, and she tells her Pokémon to dodge Pikachu's attack. Then she tells Buizel to use Aqua Jet and she tells Buneary to use Ice Beam, creating an Ice Aqua Jet. But her combination didn't work very well and it hit both Buizel and Aipom pretty badly and they fell down in the river. Then they continue their battle and Dawn tells Buizel to use SonicBoom which gets more power from the water and it hits Aipom. Then Ash tells Aipom to use Focus Punch and he tells Pikachu to use Thunderbolt on the ground. Then while Aipom is building up its power, rocks fly out the ground from Pikachu's Thunderbolt and they immobilize Buizel and Buneary. Dawn tries to tell Buneary to intercept Aipom's Focus Punch with Ice Beam, but Aipom is protected by the rocks and it makes a direct hit on Buneary, knocking it down. Then Pikachu uses Volt Tackle and Buizel uses Aqua Jet, but Buizel is knocked out because it took too much damage from Pikachu's Electric-type attack, which means Ash wins the battle.
Dawn feels bad because her Ice Aqua Jet combination didn't work very well, but her Pokémon encourage her and then she tries the combination once again, but it fails once more. Then Jessilina comes along, hoping to challenge Dawn while she's still faltering. However, Zoey decides to accept instead, despite her foot not fully healing. Jessie uses her Dustox and Seviper. First, Dustox uses Poison Sting towards the sky, and when the stings start falling down, Seviper hits them with Poison Tail making them spin, and it adds lots more speed and power on them. But Zoey manages to use her opponents combination into her own advantage by telling her Glameow use Iron Tail on the stings to send them twirling through the air and then Shellos uses Mud Bomb to destroy the stings and leave a beautiful purple sparkle behind. Then Dustox uses Psybeam, but Zoey's Pokémon dodge the attack. Then Glameow uses Shadow Claw and Shellos uses Blizzard on the Shadow Claw making a beautiful and powerful Shadow Claw-Blizzard combination attack which manages to knock back both Jessie and her Pokémon. Team Rocket decides to beat a retreat after that.
Zoey is taken to the nearest Pokémon Center, and they all agree to meet up at the Hearthome Contest.