Mackenzie Fraser is trying to move on with her life after a particularly nasty break up. She hangs out with her friend Noah, is trying to learn how to play the guitar, and is starting to see someone new. Ian is everything Melissa wasn't. Ian is a charming, kind and thoughtful doctor, but Mackenzie's heart still belongs to Melissa.

When Melissa comes waltzing into her life after months apart, Mackenzie is torn between keeping her promise to the woman who was her best friend before she became more, and keeping Melissa at a distance till they could both be around each other. Melissa is everywhere she turns, and Mackenzie cannot seem to get her out of her mind. Especially as she fights her feelings for Ian.

Torn between two very different people, Mackenzie must find out if bad blood can erase so many years of history, or if she can find a way to make her past and present make peace with each other?