In a world where humans own and train Pokémon creatures, legend has it that hree powerful Pokémon birds, Moltres, Zapdos and Articuno, maintain nature's balance by controlling the elements of fire, lightning and ice from their respective islands. Rumor has it that if the peaceful harmony and co-existence of the birds is disrupted, nature will go haywire, wreaking havoc on the world.
It's also believed that if the three birds are captured and brought together, they'll unleash the legendary, sea-dwelling Lugia, a rare and extremely valuable Pokémon. As such, Lawrence III, a greedy collector of the creatures, has set out to capture the three birds in order to attain Lugia. Having captured Moltres, Lawrence III is one step closer to his diabolical goal, but his plan has already begun to disrupt nature.
At the same time, human trainer Ash Ketchum, his friends, Misty and Tracy, and their Pokémon, including Pikachu, find themselves shipwrecked on Shamouti Island, where locals Carol and Melody are preparing for their annual festival and need someone to fill their hero role. Being game, Ash agrees to do just that.
Soon, however, the boy learns that his role will involve trying to save the world. As Lawrence III continues on his quest to capture the three birds, Ash must not only deal with that, but also various physical challenges, self doubt, and the intervention of his arch rivals, Jessie, James and their Pokémon mascot, Meowth (who collectively make up Team Rocket).