Rico is being pursued by the Explorers, a group after a mysterious pendant. She is rescued by Freed, who appears from the sky with Charizard, but she can't trust him either... What awaits her at the destination is Freed's group, the Rising Volteckers, and their airship, the Brave Asagi!

The Rising Volteckers' airship makes an emergency landing on a remote island in the Kanto region due to a malfunction. However, the ship's Pokémon, Hogeta, has mysteriously disappeared. Riko and Nyaoha land on the island to search for Hogeta. Meanwhile, Roy, a boy living on the island, witnesses a mysterious Pokémon he's never seen before…!?