After Zekrom, the Legendary Dragon Pokemon of Ideals sensed a distrubance in the universe there was only one person to turn to.
Now Princess Sarah Tomoe, the lost Sun Princess of the Alola Region and daughter of the Last King and Queen - King Doug and Queen Deliah, her godfather - Tsukumaro Wong, her adoptive parents - Nikki and James and her Pokemon and Dragon family find themselves in Equestria where three pony kinds; Earth Ponies, Pegasi and Unicorns and Pokemon and Dragon used to live together in harmony however, those days are no more and now they all live separately in fear and distrust of one another and Pokemon and Dragons are now exiled from the land on a separate isle due to an ancient legend.
But one optimistic Earth Pony, Sunny Starscout to determined to prove all ponykinds, Pokemon and Dragons can be friends. When Izzy Moonbow, Sarah and her family wander into Martime Bay, Sunny gets her chance starting the groups journey across Equestria to restore magic while meeting new friends and coming together to defeat an ancient evil which was defeated by her birth parents during their previous rule.
Note: I suggest reading Pokemon Alola Journey - Trials of Sarah before reading this story.