It’s about a young Asgardian who has ties with Gusty the Great now years later is grown and ready to start his own adventures (imagine Wonder Woman from dc super hero girls, and Finn the human and Leonardo from TMNT) merged into one Asgardian
Starlight went to get some fresh air, when a comet suddenly crashes in the yard, leaving a mystery stallion in the impact. He's taken into the care of everypony, where he reveals a secret power.
I am Silverstream and I am meant to suffer. The stars, the sun and the moon are gone, just like my friends. I can only keep searching, but they will be taken from me again. I record my suffering with my mobile phone. All I want is being remembered.
With criminal activity at an all-time low and the papers uninteresting with headlines of a royal wedding, it is no wonder Sherclop Pones longs for a case. To his utmost delight, one had been presented to him—that is the disappearance of Rainbow Dash
Nightmare Moon received an odd omen from the one who destroyed Equestria's past and now must contend with the possibility of her sister's anger coalescing into a true being while Nightmare Moon tries to retake Equestria from the King and Queen.
Exactly ninety days have passed since Sunny Starscout did the impossible and reunited ponykind. Once her lighthouse is rebuilt, she finds an old book in Bridlewood, and discovers that a pony has been watching all along.
The day after Twilight's inauguration, she doesn't wake up in Canterlot castle... but in a cage. On Earth. And the rest of her friends aren't much better off either. But can they find each other again, and figure out what the Celestia is going on?