Everyone has a dark side. Mandy's just moved in with her. The last time sixteen-year-old Mandy Matteo broke a rule, her sister died. Since that day she has done only what was expected of her, but life as a goody-goody has made her so boring her friends have all but abandoned her. Desperate, Mandy makes a wish to simply be happy. Enter Desiree, a hippie Wish Mistress (aka a genie). Years of only granting and never receiving wishes have left her bitter, and allowing Mandy to right her biggest wrong-the exact thing Desiree would wish for-only makes things worse. Still, she grants the wish and happiness arrives for Mandy in the form of Lexi, her childhood imaginary friend come to life. Magical wishes have conditions though: Once started, the wish cannot be altered or revoked and when Mandy is content with her life again, Lexi must go back to where she came from. But Lexi loves being alive, and she'll do whatever it takes to stay that way.