Single mom Kate is living her worst nightmare. Her young daughter, Clara, who has a medical condition that doesn't allow her to be vaccinated, becomes critically ill when one of her classmates, Lauren - whose family chose not to vaccinate - contracts and spreads a virus. While Lauren has no trouble recovering from the disease, Clara's condition worsens. But when another school parent points the blame at Lauren's mother and the media begins an attack, we see two very different views on parenting.