Cat's career has stalled, her marriage has gone flat, and being a stay-at-home mom for two young kids has become a grind. When she finds out, all within a few days, that she is pregnant, that a lump in her breast is the worst thing it could be, and that her husband has done something unforgivably repulsive, she responds by running away from her marriage and her life -- a life that, on the outside, looks like middle-class success. Her actions send waves of chaos through the lives of multiple characters, including a struggling house cleaner, a rich and charismatic yoga guru, and even an ailing dog. What follows is a dark comedy about marriage, motherhood, privilege, and power.