Tempest knows she did a lot of wrong in pursuit of her goals. She's asked the princesses to pass judgement on her, but their sentence isn't what she was expecting.
Princess Celestia asks Twilight Sparkle to accompany her on a picnic with plans to seduce her younger protege. Celestia X Twilight (nothing too crazy tho it's a T rating for gosh sakes) ;)
Tempest Shadow has come to Ponyville to serve her sentence, or start her new life, depending on who you talk to. She's about to get far more in the way of life changes than she ever imagined.
A thousand years ago, Princess Luna wished on a star for a daughter to call her own. Her wish was granted, but now her daughter, Princess Songbird must learn to cope after her mother is taken away from her....