When Margot and her son, Claude, come to attend the wedding of her sister, Pauline, it seems as if a family rift is being mended. Despite their best efforts, Margot and Pauline revert to their most dysfunctional selves. It does not help that Pauline's fiancé is woefully depressed and Margot's lover is as narcissistic as she is. Margot's estranged husband can't seem to recognize that Margot cringes at his every effort at reconciliation. Margot and Claude have both a loving and poisonous relationship and she begins to pull Claude down with her as she sinks in self-absorption.