Kate Adams expected to return home from Paris with a ring on her finger. Instead, her French boyfriend, Alain, breaks up with her right before she leaves for Australia. Unwilling to show up at her high school reunion desperate and dateless, Kate asks her best friend's brother, handsome Josh Marchant, to pretend to be her fiancé. Josh has always had a soft spot for his sister's friend and happily takes on the role. And as they spend time together, the lines between fact and fiction blur and they're soon struggling to remember it's all just an act. But will the arrival of an unexpected visitor shatter the illusion they've created?