Noah adores his mommy and daddy. Mommy and Daddy are architects, and while walking together to his first day of school, Noah learns that they helped design one of the houses in the neighborhood.Upon arriving at school, Noah sees his friend, Emmett, who announces he has a new baby sister who was made with "a lot of love and little bit of science."Noah begins to wonder about how he was made and rushes home after school to find out the answer. Together, Noah, Mommy and Daddy explore what it means to be donor-conceived and how generosity and genetics combined to create a home built not just by architects, but by love.