Bay Kennish discovers during a biology class that she has a rare blood type which is different from her parents. Intrigued by her new discovery, Bay convinces her parents, Kathryn and John, to visit a genetic testing facility where it's confirmed that Bay is not their biological daughter. There was a mix up at the hospital and both families took home the wrong babies. Days later, the Kennishes are introduced to their biological daughter Daphne and her mother Regina Vasquez. The Kennishes are surprised to see that Daphne is deaf. John and Kathryn immediately research ways to help Daphne and suggest the possibility of Daphne attending Bay's private school, which doesn't sit well with Bay. Regina is against Daphne attending the school but agrees to move her family into the Kennish house to deal with their new family situation.

In "Portrait of My Father," now that Regina and Daphne have completely moved into the Kennish's home, many of Kathryn's friends and neighbors have begun asking questions. Kathryn decides it's best to keep their situation a secret and devises a lie, in an effort to protect Bay, who quickly becomes victim to town gossip. Bay asks Daphne more about her biological father, but is shut down, leaving her more determined to further investigate. Meanwhile, John gets involved in Daphne's basketball games, and it's there that he meets Melody, Regina's best friend and Emmet's mother, who also happens to be the school counselor and fill-in coach at Daphne's school.