Senior year means big changes for Bay and Daphne, as the Carlton School for the Deaf receives an influx of hearing students who are not happy to be there. Daphne begins working at a free clinic as part of her probation from the Senator Coto blackmail scandal, and Bay takes an art class at a local college. Toby tries to unite a divided Carlton by coaching girls' field hockey, and the parents face the specter of the impending empty nest in unexpected ways. RJ Mitte ("Breaking Bad"), Max Adler ("Glee"), Sandra Bernhard ("Roseanne"), and Alec Mapa ("Ugly Betty") will guest star in the premiere episode and recur throughout the season.
Switched at Birth tells the story of two teenage girls who discover they were accidentally switched as newborns in the hospital. Bay Kennish grew up in a wealthy family with two parents and a brother, while Daphne Vasquez, who lost her hearing at an early age due to a case of meningitis, grew up with a single mother in a poor neighborhood. Things come to a dramatic head when both families meet and struggle to learn how to live together for the sake of the girls.