Marlo, a mother of two, is pregnant with an unplanned third child. Jonah, her son, has a developmental disorder that doctors have been unable to diagnose; she uses the sensory integration therapy to brush his skin in an attempt to reduce his sensitivity. When Marlo and her husband Drew visit her wealthy brother Craig's house for dinner, he offers to pay for a night nanny as a baby shower gift, but Marlo rebuffs him.