Two Sixteen year olds Bay Kennish and Daphne Vasquez learn that they were accidentally switched at birth. Bay grew up in a rich Family where Daphne grew up with a single mother and went deaf after getting sick at a young age.

Everyone must adjust to thier new living arangements. Daphne starts to hang out with Liam and Regina learns about Bay's family

As Bay continues to see Daphne's relationship with her family blossom, Bay wonders about her biological father. It is soon discovered, however, that the story behind the man she's inquiring about is more complicated than she could have imagined.

Tensions continue to grow while Kathyrn hosts the annual school benefit at the Kennish residence, where her new family becomes a spectacle for all of Mission Hills to gossip about. Toby and his friend Wilke's band are excited to perform at the benefit, but they're in need of a drummer - can Daphne's deaf friend Emmett really play the drums?

After learning that Bay has secretly been seeing Ty both John and Kathryn insist on having him over for dinner.

Bay is haunted by an old photo of a pregnant Regina and asks Emmett to help her find her biological father. With Emmett's assistance, the two manage to find his car in an abandoned junkyard, but just as Bay is about to give up, she notices a guitar pick that leads her one step closer to finding her father.

After the Kennish's learn of his involvement with the stolen exam and a talk with Regina, Toby decides to turn himself in and not let Wilke take all the blame. Meanwhile, Bay and Emmett continue to bond in her hunt for her biological father and, Daphne learns of a life changing secret that Regina has been keeping from her.

As Bay and Emmett's relationship continues to get more serious, Regina comes clean about the secret she's been hiding from everyone.

As Bay and Daphne celebrate their birthday, Regina uses it as an opportunity to try and make amends.

As Bay holds her art-show an unexpected guest makes an appearance and, Daphne opens up to Emmett about the feelings she has for him.

Kathryn thinks she found a nurse who knew about the switch. Bay crashes the festival the boys are playing at because she heard Daphne was there. Simone Flirts with Toby.

Bay tries to impress Melody with her ASL (American Sign Language) knowledge, trying to earn some points as Emmet's girlfriend - to no avail. Meanwhile, Regina tries to help Bay with Melody at a game night, but finds this to be harder than expected.

As Angelo makes Regina a business offer, Daphne finally confronts him about the reason he left. Meanwhile, Melody's opinion of Bay and Emmett's relationship doesn't improve when he gets in trouble.

Daphne is desperate to help Emmett keep his motorcycle, and ends up lying to John and Kathryn to get the money. Meanwhile, Melody tells Bay to stay away from Emmett. The Kennish\'s interview potential new attorneys to work on their case against the hospital and despite Daphne\'s reservations, Regina agrees to go into business with Angelo.

Bay helps Emmett move into his dad's apartment and they both meet his eccentric new girlfriend, Olivia. Daphne goes on a date with Wilke, but when she finds out he has taken other girls out on the same date, she questions whether she's special to him or not. Kathryn runs into Angelo at a farmer's market and decides to invite him over for a big family dinner.

Kathryn's mother Bonnie comes for a visit which makes Bay and Daphne question their new roles in the family and where they fit in. While Bonnie can't get over the physical resemblance between Daphne and Kathryn, Daphne still sees herself as a girl from her old neighborhood and struggles with her new identity. Meanwhile, Bay and Regina grow closer as they try to find out what happened to Angelo and their shared love of art. Toby's new girlfriend Simone tries to change him, which Bay warns him about.

Emmett photographs Bay and Daphne's blended family for a school assignment. Meanwhile, Regina gets acquainted with an art-gallery owner; Daphne questions Simone's trustworthiness; and Bay and Emmett divulge their true feelings to each other.

Things don't go well at Regina's art show, where Emmett's parents get into a big fight. Meanwhile, Kathryn's latest actions may jeopardize the lawsuit against the hospital; and Daphne feels caught in the middle regarding her two schools.

Kathryn and her lawyer meet with Angelo's lawyer, who reveals the hospital plans to argue that Regina switched the babies on purpose. Regina meets with a mother whose daughter lost her hearing. Daphne is playing basketball at the Carlton School for the Deaf; she doesn't get along with a boy named Theo.

Bay becomes involved with Emmet\'s custody battle. Elsewhere, Daphne\'s two schools play each other in a basketball game.

Kathryn and Regina join forces to search for Angelo. Elsewhere, Emmett celebrates his birthday and receives a gift Bay and Daphne worked on together.

In the first-season finale, the Carlton prom gets underway, and Travis tags along with Daphne and Wilke, while Emmett feels the weight of the secret he's keeping from Bay. Elsewhere, Angelo resurfaces; and Kathryn and John's lawyer crosses a line.

It's the beginning of a new school year, and a lot has happened during the summer. Daphne is on the job hunt and finally gets one at a restaurant called Maize, where she befriends a line cook named Scuba. She agrees to a date with a guy named Brad but is still hung up on Wilke. Meanwhile, Toby has a plan for getting revenge on Simone, but things don't go down the way they're supposed to.

Bay considers being part of a street art crew.

Daphne feels like she's a minute away from being fired after she causes a major accident at the restaurant. But things take a turn when her new boss, handsome Chef Jeff, asks her to stay late one night.

Meanwhile, Bay uses Angelo as her excuse to get around John's rules. And Kathryn is upset when Regina gets all of the attention in her interview for the new book.

Toby is caught stealing a statur but is let off with a warning once it is revealed who his father is. Bay is forced to paint a chuch murial as punnishment for getting a traffic ticket. Meanwhile, Daphne and Emmett go to a motorcycle show together and Regina ends up in the ER after injuring her ankle.

Bay and Zarra get into a dangerous situation when they search for the tagger who is ruining their street art; Chef Jeff's mixed signals confuse Daphne.

Kathryn and John are concerned about Bay's friendship with Zarra so they invite Bay's ex-boyfriend Alex and his parents over for dinner. But during the meal, Zarra calls and begs Bay to come rescue her from a sticky situation. Meanwhile, Scuba pressures Daphne into lying to Chef Jeff for him. Plus, Toby bonds with Nikki, and Regina tries to reconnect with Patrick.

Tthe lawsuit against the hospital comes to a head as Angelo returns in time for the beginning of the trial. Meanwhile, Bay scrambles to return the money she "borrowed" from John to help Zarra. Daphne and Jeff struggle in their relationship; and Emmett, Nikki and Toby form a new band.

The Kennish and Vasquez families are starting to fall apart. Daphne and Jeff's relationship is exposed, causing them major problems. Bay and Zarra take off without telling anyone. Meanwhile, the trial reaches a shocking conclusion.