When Caroline (Marguerite Moreau) throws a surprise birthday party for her sister Jackie (Bitsie Tulloch), what starts as an evening with friends quickly devolves into a somewhat less than celebratory occasion, as Caroline divulges an ulterior motive in bringing the group together. But this revelation is only the first in a night that will ultimately change everything. As old gripes are resurrected and old patterns fallen into, Caroline, Jackie, and their guests are pushed to the edge, and their bonds are tested by the emotional mayhem only sisters can wring.

Injecting his dinner-party-gone-wrong story with genuine tension and an emotionally raw tone, first-time filmmaker Adam Christian Clark plays intelligently with identification, carefully dealing out information, motivations, and character developments to shift the audience's sympathies and illuminate the surprising complexities of the relationships he is dissecting. Clark strips away the layers of Caroline and Jackie's fraught relationship right up until the film's devastating conclusion, making for a truly riveting and multifaceted relationship study.