The Pokemon Company streamed the Mega Special Animation short inspired by the upcoming Pokémon Omega Ruby and Pokémon Alpha Sapphire games on Sunday. The short features Pokémon undergoing the newly discovered Mega Evolution and Primal Reversion in the Hoenn region. (Source: ANN)

Satoshi and his friends get lost in an unknown wasteland. They eventually come across a Water Pokemon Show performed by the star of the Mariner Troupe, Hiromi. Hiromi is a descendant of the troupe of Water People able to communicate with water pokemon, and she tells our heroes the legend that's been passed down by her people for generations. According to legend, a temple the Water People built called The Water Temple Akuusha rests somewhere in the ocean, and a treasure called The Water Crown is hidden there. It's said that no one has ever seen this treasure, but that changes when a Pokemon Ranger named Jack Walker (aka Jackie) appears to chase aftert it. Jackie is on a top secret mission that has him protecting the egg of the leader of the water pokemon, Manaphy. This pokemon, called the Prince of the Sea, needs to be taken to the Water Temple Akuusha, so Satoshi-tachi and Hiromi decide to help him. Along the way, a pirate named Phantom attacks our heroes from his great submarine. Phantom plans to use the Water Crown's power to help him conquer the world, but he'll have to solve the mystery of Manaphy's egg first. When the Rocket-Dan get into the mix, Jackie uses his Capture Styler to borrow the power of a nearby pokemon to stand up to them. Satoshi and Pikachu enter the fray, but they still have to contend with the attacks of Phantom's powerful high tech mecha! Suddenly, the egg starts to shine with a vivid light, and Manpahy is born! What is the mystery of the legendary treasure? What mysterious powers does Manaphy have? Can Satoshi-tachi and Jackie complete their top secret mission? The journey to reach the Water Temple Akuusha has begun!

A long time ago, the people of Camaron Palace found themselves on the brink of destruction. Fortunately, they escaped it when Sir Aaron, the True Guardian of Aura, saved them. He sacrificed himself to stop a war between kingdoms. From that day on, a tournament is held every year to commemorate his noble deed. Satoshi, a budding Pokémon trainer from Kanto, manages to win the latest tournament and is allowed to wield a staff said to have belonged to Sir Aaron himself. Lucario, the Aura Pokémon—who is also the servant of the True Guardian—emerges from the staff. However, remembering his last memory of his master abandoning him, Lucario runs away in confusion. Meanwhile, Pikachu, Satoshi's companion, is abruptly taken by a Pokémon named Mew to the legendary Tree of Beginning. Only Lucario knows the way there, but he is unwilling to trust humans after his master's betrayal. Even so, to save his partner, Satoshi and his companions must acquire all the help they need and travel to the Tree of Beginning, unfolding hidden truths from centuries ago.

As they continue their journey through the Johto region, Satoshi and his friends visit Altomare, an island city that hosts an annual racing event called the Pokémon Water Race. While Takeshi and Kasumi are enjoying themselves, strange things seem to be happening to Satoshi—he somehow loses the water race, sees some women attack a girl with their Pokémon, and despite them saving her, the girl later denies ever seeing Satoshi and Pikachu before! Fortunately for Satoshi, his confusion clears up as he learns that the girl he and Pikachu saved earlier was actually a Pokémon named Latias, who likes to disguise herself as her human friend, Kanon. Latias and another Pokémon, Latios, are known as the Eon Pokémon, as they inhabit and guard Altomare along with a mystical blue sphere called the Soul Dew. An ancient legend of Altomare is highly connected to the Eon Pokémon and the Soul Dew, and is well known among the locals—as well as among Latias' earlier assailants, the thief sisters Zanner and Lyon. As the thieves attempt to capture both the Eon Pokémon and the Soul Dew, Satoshi is forced to act in order to stop them from bringing disaster to Altomare.