Quick recap
A giant meteoroid, Grand Meteor Delta, is headed for the planet. Ruby, Sapphire and Emerald race to learn the secrets of Mega Evolution and stop the disaster. Meanwhile Zinnia, of the Draconid people, seeks revenge on the Devon Corporation for wrongs done to her people. Ruby wins over Rayquaza, and Maxie and Archie join the heroes to combine the power of Hoenn's three super-ancient Pokémon against one fragment. Zinnia tries to claim Rayquaza, gets attacked by it and gives up, saying the planet can't be saved. With allies from Hoenn, Kanto and Johto, Ruby and Sapphire fly into space with Mega Rayquaza and shatter the meteoroid. Back on Earth, the pair enter a Contest, and Ruby Mega Evolves a Diancie.
No spoilersOpens once you mark the title as seen.