In the wake of her breakup with Emmett, Bay decides to refocus her energy on school and signs up for a Spanish class, only to discover that the new harassment policy has put her in the spotlight. Daphne learns that her D in Chemistry will affect her scholarship. John finds himself under serious financial strain as Kathryn makes plans to produce her musical herself. Meanwhile, Daphne and Mingo have a major difference of opinion that leaves Daphne with doubts about their compatibility.
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.