After being jilted by her fiancé, Margaret manages her loneliness by obsessively and compulsively organizing her already perfect home. But when her older sister, Josephine, and ten-year-old niece, Hannah, arrive unexpectedly for what seems an indefinite visit, Margaret's carefully structured life is thrown into disarray, forcing her to adapt to the duo's free-spirited lifestyle and to confront the years of estrangement. Weighed down by guilt for abandoning her sister after their parents' death and questioning her parenting skills, Josephine does her best to reconnect with Margaret by including her in family activities with Hannah – truth or dare games, backyard movie nights, and upside-down floating heads. Initially resistant, Margaret slowly opens herself to the mess of family emotions and realizes a new definition of family while learning that the bonds of sisterhood can be reestablished with time. But just as Margaret begins to embrace her new family, she discovers the truth behind Josephine's visit.
