Bon Bon has everything she ever wanted in life, well almost everything. Her career is exactly where she wanted. She has a nice house and great friends. The only thing missing may be the one thing she can never have.
Luna has returned after 1000 years of banishment but in a foalish state. To prevent her from being ruined by the nobles and to learn about her new world, Celesitia sends her sister to Ponyville.