Two families learn that a hospital mix-up years earlier resulted in their biological children being sent home with the wrong parents.

The parents contend with the new living situation; Daphne spends time with Liam; Regina opens up about her past.

Bay asks questions about her biological father; John and Daphne bond over basketball; Kathryn helps Regina find a job.

Kathryn hosts a fundraiser at the Kennish home, where guests gossip about Bay and Daphne's unusual story; Melody flirts with John; Emmett comes to the rescue when Toby needs a last-minute drummer.

Bay's parents discover she is sneaking around with Ty and as a punishment, invite Ty over for an awkward family dinner.

Kathryn brings up the subject of cochlear implants when Daphne has difficulty at school; Emmett helps Bay uncover the identity of her father; Toby plots a theft to pay off a gambling debt.