Don't be fooled by the many downvotes (It's bullies and haters being mean) Give the fic a chance.

-Everyone's dreams and realities are being targeted by an evil institution from another world, planning to harness dreams to conquer all, but a magical knight comes to aid Starfleet in pushing them back.

-A young filly who hates her parents, all grown ups, and does not wish to grow up herself, discovers a magic that not only will keep her young (With a catch) but allow her to get even with adults on a crazy and vengeful streak!

-Castor and Leilani seem to have some connection towards the Dream Knight.

-The team feels that their lives are changing too drastically with their new promotions and growing families, as if their hobbies and other jobs are fading away.