Twilight has always been an excellent student. Knew everything about any subject. But there was one she didn't really study on. Motherhood. And that is put to the test when she finds a baby Changeling...and has to hide it from her friends, the Princesses, and everypony else!
Note: The contents of this story happen before Starlight Glimmer started her revenge plan on Twilight as well as before Thorax appeared