Tom and Sarah are a recently married couple residing in Suburbia with their infant daughter, Diana. Things are well and bright until a mysterious package arrives on their doorstep and proceeds to shatter their preconceived notions of being a parent, forcing them to revisit their childhoods and confront the demons of the past. If they succeed, they can alter their family and the world's future. But, they must meticulously follow certain precautions to do so.