Rachel hates her life. When her on/off boyfriend David goes to a music festival she decides to surprise him - but she gets a shock of her own. Not only does she find David making out with someone else, but it's their friend Jo! Super-lovely, super-loved, all-round perfect Jo. Rachel runs away, wishing she could leave her life behind - and she suddenly finds herself in Jo's body! Can she keep this swap a secret? Can she unravel what's really going on? Can she get to grips with Jo's out-of-control curly hair? And if she discovers that being in someone else's shoes isn't all it's cracked up to be, can she ever be herself again?