Tiffany's been through a lot these past ten years. Including being slightly mentally unstable, a past suicidal attempt, an ex-unfaithful husband and then eventually winding up in a mental rehab.  But once she's released she takes in her daughter, Jinri who everybody calls Sulli, in to try and make up for lost time, trying to remain mentally stable with the norms of society, and occasionally butting heads with Xiumin, one of her friends who were in rehab for bipolarism.