Bay Kennish discovers during a biology class that she has an extremely rare blood type (AB) which is different from her parents. Intrigued by her new discovery, Bay convinces her parents, Kathryn and John, to visit a genetic testing facility where it’s confirmed that Bay is not their biological daughter, The hospital finds out that the babes of two families were switched at birth.

Days later, the Kennishes are introduced to their biological daughter Daphne and her mother Regina Vasquez. They are surprised to see that Daphne is deaf. Both families react differently, but both are shocked at how long they took to see the signs.

Bay is angry and upset, acting unfriendly towards Daphne, who offers only smiles and kindness. Like her newly found daughter, Regina does not act warmly towards the open-hearted Kennishes.

While Bay blasts music and the parents discuss the recent events, Daphne and her biological brother Toby bond over a house tour and a fun game of basketball. Regina leaves, and John drives Daphne home later. John is shocked at the neighborhood - it is the complete opposite to his fancy mansion, which includes tennis courts, a swimming pool, a guesthouse and a garage Bay uses for "art".

Bay, meanwhile, has gone to a piercing salon with her boyfriend Liam, complete with a fake ID to get her nose done. Liam is not encouraging, and confronts her about how strange she has been acting lately (unknown to Liam, the reason is Bay finding out about her biological parents). Bay is defensive and angry, and when Liam asks why she is so hard on people, she suggests a break. Liam agrees and leaves on a bad note.

Kathryn is looking through a baby album, lost in thought, when John arrives. He shares his concerns about Daphne and Regina's house, and Kathryn agrees "they have to get her out of there."

At breakfast, Bay is rebelling against her rich parents, still angry and confused. She shows off her flashy new stud and whips out a cigarette, to Kathryn's shock. When questioned, she says she is just "living the life she was supposed to live."

John Kennish visits Regina, telling her about cochlear implants. Regina, of course, has already heard of them. John offers the money needed to 'fix' Daphne - about $100 000 plus speech therapy - and Regina turns on him, furious. She explains that Daphne is happy and comfortable how she is, and the sooner John accepts her lack of hearing, the better it will be for all of them.

At the Carlton School for the Deaf, Daphne has a sign language conversation with a friend about how her life could have been, if there hadn't been the mix up. They realize that if she had gone home with her biological parents like she was meant to, she probably wouldn't be deaf.

Bay visits Regina and Daphne's neighborhood, before leaving after a confrontation with a neighbor who doesn't like seeing "rich white girls" around. The neighbor,"Ty", is later revealed to be acquainted with Daphne.

John comes to Daphne's school, where she is practicing basketball. He suggests that Daphne attends the private school Bay goes to - Buckner Hall. He clearly doesn't approve of schools full of deaf people. Daphne acknowledges Bay's less than friendly behavior. She agrees to think about the school, and he agrees to give her time and set up a tour. Before he leaves, he requests that she doesn't tell Regina about the idea of moving schools.

The scene cuts to Buckner Hall, where Daphne is on a tour with Kathryn and John. She is overwhelmed and uncomfortable. Bay spots her through a window, and explains to her friend that Daphne is just "some girl her parents are tutoring." Daphne asks to walk around alone, and comes across Liam - the boy Bay had recently broken up with. Liam flirts and Daphne jokes around, but the bell rings and their meeting is cut short.

Bay is furious at her parents for trying to make Daphne go to her school. John sees her piercing for the first time, and tries to get her to take it out, but to no avail. She storms away.

On the steps of Buckner Hall, Toby sees Daphne and the siblings exchange small talk. Daphne's best friend, Emmett Bledsoe, drives up on a motorbike. He too is deaf, and attends Carlton with Daphne. Toby is still oblivious to manners around the hearing impaired, and Emmett - who rarely speaks - is not impressed.

Meanwhile, Bay is seen spraying graffiti art on a wall in the Vasquez's neighborhood using handmade stencils. When she's finished, there is a painting of a girl in a pink dress getting ready to smash the wall. Ty approaches her again, and Bay is flustered and annoyed. He half flirts, and agrees to keep another of her secrets - this time her illegal painting habits. Bay offers a smile and leaves.

On their way home from Buckner the same time Emett arrived to take Daphne, John and Kathryn see Daphne on a motorbike. Kathryn was appalled, and while John is doing paperwork she admits to doing a background check on Regina. She had discovered that Regina had two DUIs - offences for driving under influence.

The scene cuts to Regina and her mother - who lives with them - walking along the street near their house. Adrianna(Daphne's grandmother) suggests letting Bay come for dinner. Regina is completely against the idea, especially given her house compared to the Kennish Mansion. The women find that Regina's car has been broken into, and her phone charger and two dollars has been stolen. This is a big hit to Regina, who then gets a call from the police. Her face changes into shock, and she tells Adrianna that Daphne has been arrested.

Regina rushes to the police station, who finds, instead of Daphne, a smirking Bay.

Bay is lectured by two moms.

Bay sits between Regina and Kathryn at the station, getting a lecture from the latter about buying beer with a fake ID. The two mothers clash over parenting policies, and Kathryn makes a crack about court dates sounding familiar to Regina. Regina is affronted, and explains that the offences were twelve years ago. Kathryn refuses to let it go, asking whether she was drunk when Daphne got sick. John tries to break it up, but eventually sides with his wife while Bay gets more and more annoyed. Eventually Bay walks out of the station alone.

Later, the Kennish parents are cruising the roads, looking for their missing daughter (Bay). Kathryn is upset at herself for not realizing at the hospital that Bay wasn't Daphne. They discuss how bitter-sweet it was, because they got Bay out of it.

A stressed Daphne talks to her grandmother about her difficult choice - Buckner or Carlton? The question seems to her a question of John and Kathryn, or Regina? Regina returns home, and Adrianna encourages Daphne to talk to her, which she does. Daphne explains that even though Regina will always be her mother, she needs to get to know her biological parents. She tells her about Buckner, and about wanting to go. Regina shuts her down ("Absolutely not.") and tries to discourage her daughter. Both leave frustrated and angry.

Bay is sitting on a curb when Toby picks her up. When she says that nobody can understand, he points out that someone can - Daphne.

Bay and Daphne talk.

It's later that night. Daphne is scared, seeing a face out the window. It turns out to be Bay, who climbs through the window. The two bond over music - Daphne can feel the beat if it's loud enough - and then Bay discovers that Regina is a talented artist. Daphne then confesses that her and her mother are struggling to pay the rent, and so they are going to move to her uncle's house out of town.

The next morning, Bay is still at Daphne's. She meets Adrianna - her own, biological grandmother. Regina starts to lecture Bay before being reminded that she was just like her when she was her age.

Bay walks into her own kitchen - at the Kennish's house - with red streaks in her hair. Kathryn is shocked, until Bay explains they're just clips. She also admits the stud was just a sticker and she never got the real thing done. The two embrace, and Bay suggests that the Vasquez family moves into their guesthouse.

The scene changes - Bay's idea has become reality, and Daphne's family is moving in. Helping them with the move is Ty, and Daphne explains "he's like my big brother." 

The episode comes to a close. Bay begins to wonder about her biological father; Regina and Kathryn have a firm and cool conversation; Emmett shows up on his motorbike and departs with Daphne.