Bay enrolls in an experimental program at Carlton for siblings of deaf students. Elsewhere, Toby embarks on a romance with Nikki, but then he pulls back after he finds a distasteful picture of her on the Internet; and Regina learns about Angelo's baby.

Melody hosts a tolerance retreat after tension builds between the hearing and deaf students at Carlton. Elsewhere, Kathryn's remarks during a radio interview may jeopardize John's campaign; and Regina gets some alarming health news.

Bay adjusts to the changing nature of her relationship with Angelo; Daphne considers taking the next step with Travis.

Daphne feels uncomfortable around Travis; Kathryn tries to get closer to Bay by volunteering to work at Carlton.

Bay hosts an anti-Valentine's Day party, where Noah and Travis get into a fight. Meanwhile, Angelo and Lana call a temporary truce; and Regina disagrees with the Kennishes on how to deal with a situation concerning Daphne's food truck.

Daphne and Travis quarrel, while Bay and Noah's romance thrives. Elsewhere, Toby becomes intrigued by a new girl who's working as a volunteer for his dad's campaign.

Discord breaks out at Carlton when the deaf students oppose the pilot program for hearing students, leaving Daphne feeling trapped in the middle. Meanwhile, Bay finds Regina's behavior puzzling; Daphne is cast in a play; and Toby bonds with Elisa.

Daphne leads her classmates in a protest against the closing of their school, and Bay's efforts to join them are met with resistance. The episode is presented entirely through American Sign Language.

The Carlton students learn the outcome of their protest. Meanwhile, John's campaign concludes abruptly; Emmett contemplates telling Bay about Daphne and Noah's kiss; Lana's labor begins; and an inebriated Regina turns up at Angelo's door.

Regina returns from rehab early to spend time with Daphne, who has bonded with her biological parents while Regina was away. Meanwhile, Bay runs into Ty; Travis proves to be a bad influence on Emmett; and Kathryn and Nikki don't see eye to eye.

Bay discovers some surprising info about Ty's time in the military as she reconnects with him. Meanwhile, Toby and Travis covet the same position at John's car wash; and Kathryn and Daphne have trouble accepting Bay's desire to stay with Regina.

Toby and Nikki's relationship is strained by work and wedding planning, so Bay tries to help Toby find a release by booking a gig for his band. Meanwhile, Regina and Bay's messiness irks Angelo; and Jace introduces Daphne to a new adventure.

Angelo becomes a member of the country club. Meanwhile, Regina begins a new job; Kathryn's position as a senator's wife leads her to have an awkward encounter; Daphne is unsure about Jace's feelings; and Bay uncovers new info about Ty and Mary Beth.

A look at what would have happened if Regina had revealed the switch when she first uncovered it finds both girls being raised by the Kennishes: Daphne has a cochlear implant and is spoiled and manipulative, while Bay's a top scholar who overcompensates.

The Kennishes adapt to change in the wake of a family emergency. Meanwhile, Daphne's family obligations interfere with her time with Jace; Angelo tries to increase business for Regina; and Bay feels uneasy when she meets an Army medic who served with Ty.

Angelo's relationship with Bay is tested as he fights for custody of his infant daughter. Elsewhere, Daphne and Jace stumble onto a possible political scandal; Nikki learns that Toby's reconnected with Simone; and Emmett sets up a blind date for his mom.

Bay organizes Deaf Day at the amusement park, and Emmett assists her with a special movie screening. Meanwhile, Daphne's hit with a surprise when she runs into Chef Jeff; and Toby tries to help Nikki deal with a dark part of her family history.

Ty and Bay embark on a camping trip. Elsewhere, John continues to show Regina his gratitude; Nikki questions her mother about her father's past; and Parker's distressing news causes Daphne to become more frustrated with Jace.

Bay and Daphne host a bachelorette party for Nikki. Meanwhile, Toby's bachelor party goes off course because of Simone; Jennice makes some surprising requests for the wedding; and an altered living arrangement has Angelo and Regina reexamining things.

Toby prepares for his wedding, and his parents contemplate being truthful with him. Meanwhile, Bay seeks a long-distance romance with Ty in the face of his redeployment; and Daphne is forced to own up to her mistakes.