Regina, Kathryn and John are shocked when Bay tells them about the extent of Daphne's self-destructive behavior, prompting the parents to set some ground rules. Bay reconsiders attending the prom when the school board implements a new rule regarding dance dress code. Daphne continues her downward spiral when a bad decision puts her job at the clinic in jeopardy. Meanwhile, Tank helps Toby grow his deejay business, but their bromance is tested when Toby is offered a gig at Omega Psi.
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.