A newly wealthy Angelo buys expensive presents for everyone. Meanwhile, John and Kathryn contemplate entering the political arena; Bay faces cheating accusations; and Daphne lands in hot water because of Jeff.
Regina is shocked when Angelo tells her about Lana and the baby. After convincing her parents to let her attend Carlton School for the Deaf, Bay discovers that the transition is not as easy as she had expected. Meanwhile, Toby and Nikki's relationship hits a bump when Emmett sees something from Nikki's past that makes Toby question exactly who this girl is.
Bay finds herself on the wrong end of Natalie's wrath, forcing Melody to take everyone on a Tolerance Retreat to help bridge the divide between them.
Meanwhile, Kathryn possibly hurts John's campaign during a radio interview. Regina gets bad news about her health. Toby and Lana bond.
Looking to give Bay an opportunity to meet the mother of her soon-to-be-born half-sister, Toby invites Lana to dinner at the Kennish house. Meanwhile, Daphne tries to help Travis with his problems at home.
Daphne may have taken on more than she can handle, while Kathryn volunteers to direct the play at Bay's new school.
Meanwhile, Toby approaches his grandfather for a college recommendation.
Daphne continues to hide the truth from her parents, while Bay gets closer to Noah.
Angelo uses his new money to buy presents for the families, which include a food truck for Daphne. Bay is accused of cheating on her French test.
Daphne feels torn when the deaf students at Carlton start campaigning against extending the pilot program for hearing students.
When news of the school's closing spreads throughout campus, Daphne leads the students of Carlton School for the Deaf in arranging a demonstration to take place on the eve of the "Romeo and Juliet" play, in which Daphne has the lead role. Meanwhile, as one of a handful of hearing students in the school, Bay's attempt to be part of the campaign is challenged.
Daphne and the students of Carlton School for the Deaf find out if their protest will keep the school open, and deaf. Lana goes into labor, Toby makes a surprise announcement, and John's campaign for office ends unexpectedly.
Meanwhile, an intoxicated Regina shows up at Angelo's. And, will Emmett tell Bay about the kiss between Daphne and Noah?
While Regina has been away at rehab, Daphne has grown closer to the Kennish family, spending her days at their country club and her nights in their guest room. This new family dynamic does not sit well with Regina, who unexpectedly returns home early in hopes of spending more time with Daphne. Bay begrudgingly starts working at her dad's office and, when her car breaks down near a local carnival, runs into her ex-boyfriend, Ty (guest star Blair Redford, "The Lying Game"), who has returned from serving in Afghanistan. Meanwhile, Travis talks Emmett into bringing some girls over to the house while Melody is out of town, and Kathryn's elaborate ideas for Toby and Nikki's rehearsal dinner rubs Nikki the wrong way.
Just as Bay and Ty begin to reconnect, Bay learns some shocking news about Ty's experiences in Afghanistan and after he returned home. John is torn when both Toby and Travis approach him about a manager position at the car wash.
Meanwhile, Kathryn and Daphne have a hard time coming to terms with Bay's request to stay with Regina.
When she sees that Toby is overwhelmed by the demands of work and planning a wedding on a budget, Bay looks to lighten the mood and books his band to perform at the local carnival. Angelo is frustrated by Regina and Bay's messiness, while Adrianna's frequent visits has Kathryn on edge.
Meanwhile, Jace introduces Daphne to geocaching.
The politics of being a senator's wife are put to the test when Kathryn has an uncomfortable encounter. Daphne is getting mixed signals from Jace and Bay learns more about Mary Beth and Ty.
Meanwhile, Angelo joins the country club and Regina starts a new job.
What if Regina had told the hospital about the switch when she discovered it years ago? And what if both girls had been raised in the privileged Kennish household from age three? In "Ecce Mono", this alternate reality is revealed: Daphne has a cochlear implant, and doesn't know American Sign Language. Having been spoiled by her parents to make up for the switch, she's manipulative and not the best student. Bay, on the other hand, is a straight-A student, often trying to compensate for being the Kennishes' non-biological daughter. In addition, Kathryn is a successful author of bodice-ripping novels and, while still married to State Senator John Kennish, their marriage is far from perfect.
Daphne is torn between her obligation to her family and her desire to spend time with Jace. John must face the reality of his situation. Angelo offers to help Regina bring in business. Meanwhile, Bay is intimidated when she meets a cool, confident Army medic who served with Ty in Afghanistan.
Angelo invites Bay to join him at a pivotal meeting concerning the custody of his infant daughter. When Daphne and Jace uncover a potential scandal regarding Senator Coto, they must decide what to do with the confidential information. Meanwhile, Nikki discovers that Toby and Simone have been in touch, and Emmett and Travis try to set Melody up on a blind date.
When business at Maui, Kansas starts to slow, Bay coordinates a Deaf Day and works with Emmett to organize a special screening of "Deafenstein". Daphne is shocked at what she discovers when she runs into Chef Jeff and John brings some business to Regina. Meanwhile, Toby tries to help Nikki cope with a family tragedy from her past.
Daphne's frustration with Jace comes to a head when Parker shares some upsetting news. Nikki confronts her mom about her dad's history. Meanwhile, John continues to find ways to pay back Regina for saving his life, and Ty and Bay go camping.
Bay and Daphne throw Nikki an impromptu bachelorette party while a call from Simone alters the course of Toby's bachelor party. Meanwhile, Kathryn is surprised at Jennice's extravagant wedding requests, and a change in their living situation leads Angelo and Regina to reevaluate their relationship.
John and Kathryn contemplate telling Toby their true feelings about his decision to marry. Daphne must own up to her mistakes while Bay works on a plan to continue her relationship with Ty while he is overseas. Meanwhile, Angelo finds himself in over his head.