Hudson adores his Mommy and Mama. Mommy and Mama are architects, and while walking together to his first day of school, Hudson learns that they helped design one of the houses in the neighborhood. Upon arriving at school, Hudson meets a boy with a new baby sister and learns that babies come from mommies and daddies. Hudson begins to wonder about how he was made without a daddy and rushes home after school to find out the answer. Together, Hudson, Mommy and Mama explore what it means to be donor-conceived and how generosity and genetics combined to create a home built not just by an architects, but by love.