Twilight has grown curious about Bluebloods relationship to the princesses sends her around Canterlot in search of answers. however she quickly discovers that Celestia does not want her finding the answers she seeks... only giving her more of a driving force to find out what's going on...
This story was started before Princess Candice was brought up... so if continuity changes and it does turn out that she's an alicorn, and that alicorns are more common than expected... oops, my bad... i came into this with the thought that Alicorns were rare creatures, so yeah...