After an accident, Rarity and Twilight are thrown in a race against time to stop their transformation into changelings before they become part of Chrysalis' swarm forever.

Changelings.

To most, they are the creatures that almost took Canterlot, shapeshifters able to feed on the emotions of those around them.
While this is true, it is not all there is to the story.

When the Great War began, an alliance was struck between Princesses Celestia and Luna, of Equestria, and Queen Chrysalis, of the Changelings.
The changelings, natural infiltrators since birth, would become spies for Equestria. In return, they would no longer be hunted, permitted to continue feeding as they had for countless years before their failed invasion, provided they not engage in acts harmful to the equine government or population at large.

Of course, that was simply the beginning. As the war began to escalate, Stable-Tec, the company responsible for the life-saving Stables, recieved a request from parties that would, as part of the contract, remain anonymous and unnamed.
They were asked to create something new, something that would allow both changelings and ponies to survive, and promote harmony between the races.

They were asked to create...

Project HIVE

Long ago, Discord was defeated. But, what happened after he was? Let's delve deeper into the lives of the Princesses. Let's see what caused Tia to banish her only sister to the moon. Let's see how Discord was truly able to come back out of stone after Luna was back home, safe and sound. Let's take a look into the past, and see how life became a Nightmare.

Ever since her loss in single combat to Queen Chrysalis, Princess Celestia has been unable to get so much as one good night's sleep. Her dreams are plagued by nightmares, and the lack of sleep is beginning to interfere with her royal duties.

Perhaps all the Princess needs is a good night's rest... Unless there's something more to these dreams than she is willing to suspect.

Story rated teen just in case due to dark themes. Nothing sexual or gory though.

Cover art provided once again by the super awesome-white tigress-12158: link