When Dara finds her birth certificate, she is puzzled to find two strange names on it, but when her mother, Mellie, reveals that she is transgender and transitioned when Dara's biological mother died soon after Dara's birth, Dara is stunned and angry--and she sets off with her friend Sam, in search of the grandparents she never knew existed (and who may be able to fund her tennis career), and the family secrets she can only guess at.