No one ever said being a new parent was easy, especially if your wife is a changeling. Regardless, there is a little one on the way, and Rhino and Gel will have to learn how to be parents, as well as dealing with the first pony-changeling hybrid.
When a patrol of Royal Guards finds an infant changling while exploring the Frozen North, one pony decides take the abandoned shapeshifter in and raise it as her own daughter.
Even Equestria's powerful magic can't heal every sickness. But years after Sweetie Belle passed away, an enterprising young bat uses her final brain scans to give the little unicorn a second chance.
A newly christened Queen attempts to reign in the changeling race and integrate them into pony society. Even though there are those who would prefer such an effort fail...