In this episode, Susan Dominus, a staff writer for The New York Times Magazine, investigates a heart-wrenching IVF mix-up that intertwined the lives of two families. Parents Daphna and Xander Cardinale share their emotional journey after discovering their child was not biologically theirs. They recount the devastating realization, legal battles, and their first meeting with the other family. Ultimately, both families navigate this complex reality, forming an unexpected, supportive bond that challenges traditional notions of family.