Olive May had a motto, leave the past in the past. But when Calum, her former best friend, decides to return to his hometown four years later with that warm smile on his face, Olive isn't sure if the past is really behind her. Between smiles and tears, laughter and screams, understandings and misunderstandings, this is the story of two old best friends connected by an invisible thread that no one will ever be able to break.