A family tree assignment leads an adopted girl to discover the different ways to be a family. When her teacher gives her class a simple family tree assignment, Ada is stumped. How can she make her family fit into this simple template? Ada is adopted. She can see where to put her parents on the tree, but what about her birth mom? Ada has a biological sister, but her sister has different adoptive parents -- where do they go on the tree? But with the help of her friends and family, Ada figures it out. She creates her family tree . . . and so much more. Loosely based on the author's own experience, this moving story explores the different ways families are created and how the modern family is more diverse and welcoming than ever before.