Dr. Louis Creed and his wife, Rachel, move from Boston to Ludlow, in rural Maine, with their two young children. Hidden in the woods near the new family home, Ellie, their eldest daughter, discovers a mysterious cemetery where the pets of community members are buried.
When Pete and Ellie decide to start a family, they stumble into the world of foster care adoption. They hope to take in one small child but when they meet three siblings, including a rebellious 15 year old girl, they find themselves speeding from zero to three kids overnight.
