Sixteen years ago, Ann (Tyne Daly) walked away from her husband and son, choosing to raise only her three eldest daughters (Ally Sheedy, Marceline Hugot and Marla Sucharetza). With ailing health, Ann asks her daughters to find her estranged son in Boston, and the sisters set out to grant their mother's wish. What they don't realize is how emotional the journey will be, and how many questions about their past and future it will bring about.