Rachel has a problem. She’s decorating for Christmas, and just needs a few key packages to arrive so she can finish. But these packages are misdelivered across the hall–and Rachel suffers from debilitating agoraphobia. Her attempt to retrieve them is interrupted by the emergence of an unexpected tenant from the apartment across from hers. Their anxiety-filled first meeting becomes a chemistry-crackling correspondence as Rachel sends Jo, the temporary new neighbor, notes on paper planes across the hall and Jo responds in kind. But can this new romance overcome Jo’s fleeting stay in town and Rachel’s need to stay where she feels safe?