Nini, who was angry, due to Clemont's Chespin and Serena's Pancham bumping into her Farfetch'd was seen with Smoochum. After hearing Serena was to become a Performer, Nini showed one of her performances she was working on. Her Smoochum used Powder Snow, a snowy cloud, which Farfetch'd cut using Fury Cutter. Smoochum used Heart Stamp and Farfetch'd ended the performance with Fury Cutter. Smoochum observed Pancham's performance with Fennekin and started to blush for him. Smoochum started to dance with Pancham and tried to kiss him, but failed. Nini had thought of trading Smoochum for Serena's Pancham, but Serena declined. Team Rocket fooled the heroes and Nini into believing they offer lessons in choreography. Smoochum was one of the Pokémon Team Rocket caught, but was freed after Chespin and Pancham started attacking each other, causing the carriage to be dropped. Smoochum followed Serena's Fennekin, but was knocked out by Inkay's Psybeam. However, the heroes and Nini came and rescued their Pokémon.
Nini appeared in Anistar City with her Smoochum, who tried to, but failed to kiss Pancham. Smoochum also appeared in Couriway Town and helped Nini prepare some ingredients for the Poké Puff in the first round. In the second round, for her free performance, Nini had Smoochum use Powder Snow and Heart Stamp, moves that were sliced by Farfetch'd Fury Cutter.
Smoochum and Nini participated in the first round of the Master Class Tournament. Smoochum started by using Heart Stamp and jumped off, landing on the hearts she released and made a pose with Nini. In a following performance, Smoochum continued using Heart Stamp, but they lost to "Jessilee" and her Gourgeist. Nini and Smoochum, along with Miette and Shauna, watched the finals, where Serena challenged Aria for the prestigious title of Kalos Queen. After the Master Class tournament was over, Smoochum managed to kiss Serena's Pancham before departing with Nini.