Shocking! Mega Rayquaza and the Mysterious Land!?

The mystical land of Area Delta is said to have a terrifying Pokémon that abducts trespassers into another world... and it's a Mega Rayquaza?! Pokémon journalist Sohdayo invites Liko and the others along to ascertain the truth... however, they're faced with one mysterious, unnatural phenomenon after another...?!