Mille Nightshade has a secret. She's a witch. And when her selfish siblings find out and play a nasty trick on her, Millie finds out that she's going to be an even better one at an academy for witches. But does it mean she'll have to leave everything that's ever meant something to her? Mille is forced to make a grave decision: Is she in, or is she out? A meaningless pack of sisters forces her to fly. From home. On a broomstick.  And maybe never come back.