Wynn Jamison is turning thirty. Her career has made her rich, but her love life is sorely lacking. She's okay with that until she spends her birthday dinner with the woman who could've changed it all. There's only one problem. She's married to Wynn's sister.

Carly Evans is tired of her wife ignoring her needs to put her career first. Family has always been important to her, and Jordan just doesn't seem to care.

A freak thunderstorm rages during the night, and Wynn finds herself catapulted back in time to the day she made the worst decision of her life—stepping aside to let her sister romance Carly. Reliving the day over and over again, Wynn must decide what is most important: success, loyalty, or love. Given a second chance at happiness, will she take the opportunity and change her destiny?