A direct continuation of the second season. This time there are aliens and a robot friend that hangs out with the gang.

The second half of the special will look back at the series so far and provide a complete explanation of all the mysteries in the show. It will also preview what will happen in the future of the series.

The story begins the day before the graduation ceremony. Five middle school girls each are preoccupied with their real everyday lives. These girls meet each other in a fantasy world after being sent there through a sudden occurrence. There, they learn about the impending crisis that this world is facing. The way to avert this crisis is for the five to collaborate and bring their five hearts together as one through dance. However, the five cannot come to love the world, and cannot tell their true feelings to one another, so their hearts are unable to unite. The time limit is fast approaching. Can the dance of the five girls save the world? And will they be able to graduate? (Source: ANN)

Satoshi and Pikachu have arrived in Lumiose City of the illustrious Kalos region to capture more Pokémon and continue their journey toward becoming the very best. Meanwhile, a genius inventor named Citron and his little sister Eureka wander the city when they run into Satoshi who quickly challenges them to a battle. However, they are soon caught up in a dangerous incident when Team Rocket, following Satoshi into Kalos, cause a Gaburias to rampage through the city. Far away in the quiet Vaniville Town, a young girl named Serena slogs through daily Sihorn riding practice at the behest of her mother, a professional Sihorn racer. After practice, she sees the events unfolding in Miare City on television where she recognizes a boy from her childhood. Having left a significant impact on her life, the sight of him stirs in her a desire to meet him again; and so, Serena sets off to Miare City, determined to find the boy from her past. Pokemon XY follows the group as they travel throughout Kalos in pursuit of their ambitions—Satoshi challenging Pokémon gyms, Citron learning from Satoshi, and Serena searching for what exactly her dream is. Along the way, they meet new friends, face new rivals, and continue to thwart Team Rocket's schemes, all the while discovering a little about the mysteries of mega evolution.