Pokémon Ranger: Guardian Signs (Nintendo Cinematic Universe)

Pokémon Ranger: Guardian Signs is a Japanese anime film.

Summary
Aliens allegedly appear and the Rangers must stop them from being mind-controlled by the Pinchers.

Plot Elements

 * While flying to Oblivia, Ben and their partner encounter two Pinchers chasing Latios. Latios stalls them long enough to let the Pokémon escape, but the Pinchers' leader, Red Eyes, appears and attacks Ben's partner with his plasma cannon. Ben intercepts the blast and is knocked off his Staraptor into the ocean.
 * Ben washes ashore on Dolce Island, in southwest Oblivia, where the Pokémon Pinchers have just captured many Pokémon. He meets Ukulele Pichu and a shipbuilder named Booker, who witnessed the event from afar, explaining that he came when he saw the "UFOs" and was worried about the Pokémon. He invites Ben back to his home in Cocona Village, on Renbow Island to the north, and Ukulele Pichu, worried about its captured friends, joins them.
 * Back at Booker's house, shortly after Ben explains the situation, a village boy named Ralph rushes over and says that the "UFOs" have returned, headed towards Teakwood Forest, and that a local lumberjack named Arley pursued them and has not returned.
 * Ben and Ralph head after them as well and find the Pinchers in Rasp Cavern, stealing a piece of a stone monument.
 * An angered Raikou appears and chases the Pinchers away.
 * The piece of the monument is revealed to be something known as an Involith.
 * The Pokémon Pinchers plan to retrieve Involiths from monuments around Oblivia in order to awaken the Legendary birds. Once the three Legendary birds awaken, a strong Pokémon will appear and help them in their scheme to control the Oblivia region. However, this angers the Legendary beasts.
 * Ben must calm down the Legendary beasts, while trying to foil the Pinchers' plan.
 * Although Ben manages to prevent Blue Eyes and Red Eyes from completing the Pinchers' plan, the leader Purple Eyes does not want to give up on controlling the Oblivia region.
 * After the three Legendary birds awaken, Ben encounters the Societea, a group of four retired thieves behind the actions of the Pokémon Pinchers. They decided to revive their group and took control of the Pokémon Pinchers in hopes of obtaining eternal youth by summoning the Golden Armor.
 * The Societea revives the ancient Sky Fortress that was the power source of an Ancient Ruler, and vaporize Dolce Island to show the citizens of Oblivia their power.
 * Before Ben can infiltrate the Sky Fortress, he must find the Rainbow Grail and take it to the Rainbow Dais on the sea floor to summon a Ho-Oh. After they capture Ho-Oh, it destroys the barrier around the Sky Fortress.
 * Ben may now enter the fortress and challenge the Societea. After capturing the Mewtwo controlled by the leader of the Societea, Edward, Purple Eyes appears again and takes control of Mewtwo.
 * After defeating Mewtwo again, the Sky Fortress begins to fall, which would cause a tsunami that can destroy Oblivia. However, Ho-Oh lends Ben its power again, making the fortress land safely in the ocean.