Abby considers leaving her Wall Street job and has an unforeseen showdown with her ex. Meanwhile, Trace has trouble explaining why he left Nashville and Jess wants to open a new business on her own.
Abby decides to stay in Chesapeake Shores and fight for custody of her daughters. Trace deals with troubling news concerning his past in Nashville. Mick suggests that Bree remain in town in order to get over her writer's block.
As Abby settles in and starts her job at her firm's Baltimore office, she wonders if she can remain just friends with Trace.
As Kevin remains missing, Mick, Nell and the rest of the O'Brien family nervously wait for more news; Abby goes to New York to fight for custody of her daughters; Trace continues to hide from his past, but a surprising new idea may have him returning to his music dream after all.
Trace makes a confession regarding why he left Nashville. Meanwhile, Megan confronts Mick about past mistakes responsible for pushing her away; and Abby learns the truth about the fraud investigation from a surprising source.
As Mick nervously faces a failing business deal, Abby is subpoenaed in the investigation against Wes, and Connor comes up with a plan to prove her innocence. Kevin recovers from his fall at home while struggling to define his future with Georgia, before Jess opens up about a devastating event that could help them understand each other. And Trace learns the warehouse property is still in reach, but his long-held anger toward his own father could prevent him from finally realizing his dream.
As Abby and the rest of the O’Briens prepare for the town’s annual lantern festival, Trace must return to Nashville to face a mistake from his past. Mick takes his granddaughters back-to-school shopping while covertly working on a business deal that is bound to cause family conflict.
Mick makes some unpopular business decisions when he plans to sell the nightclub that he and Trace had built together. When planning her cousin’s wedding goes awry, Jess turns to an unexpected source for help. Bree fights to regain control in the production of her play.
As Abby sends her girls off to their first day at a new school, conflict arises between Trace and Wes about their roles in the family—complicated further by a Nashville recording label taking interest in Trace’s new demo with a former flame. Mick butts heads with his brother over family land.
Trace hits the road to record an album with his ex-girlfriend but has trouble channeling creative inspiration while he is away from Abby. A well-intentioned Jess creates trouble for Bree when she advertises that a famous author will attend a book reading at Bree’s new bookstore.
Nell discovers a treasure map that Bree made as a teen, leading Bree and Kevin to hunt for a family time capsule in the backyard. While Trace is in Nashville fighting his producer Mark Hall to keep Leigh on an upcoming album at the risk of his own career, Abby meets a handsome widower in the PTA.
As the nightclub opening nears, Trace spends late nights practicing with Leigh and his band; Mick fights city hall to receive a live music permit; Abby receives a promotion at work, but it leaves her with less time to spend with the family and Trace.
Mick receives damaging information about Thomas, and considers whether to use it in their town hall debate; Jess plans a special meal to win David over; Bree fears moving forward with her new admirer.
Away from the distraction of technology, Abby and Trace talk about their past and the future during a camping getaway; Nell, Mick and Thomas try to work out their differences in person; Bree has trouble resisting the charms of her new suitor.
Trace receives offers from music executives after his band's video goes viral, but he tries to convince his band to give Mark Hall another shot. Meanwhile, Abby, Nell and Megan spend some family time together preparing a princess party for Carrie.
After months away on tour, Trace returns to Abby. Trace’s Chesapeake Shores homecoming becomes complicated, however, when his growing fame draws unwanted media attention to his relationship with Abby and her girls. Mick faces off against Connor in an environmental legal battle. Though the two are on opposing sides, Mick tries to warn his son about a major error before it is too late. Jess discovers Bree’s manuscript and is shocked to discover what’s inside. Meanwhile, Kevin continues his paramedic training, and grows closer with Sarah. When Trace and the O’Brien family come together for the annual oyster festival, Nell recruits the family to save a beloved landmark.
Though they are blissfully together in Chesapeake Shores, Trace faces a difficult decision and Abby is confronted by ghosts from her past. When a country legend offers Trace a gig that could propel his career, he weighs the benefits against the massive cost of being away from Abby and the girls again. Abby feels guilty when she finds a letter that she wrote Trace years ago – still unopened – and questions what to do with it. Mick and Megan meet up with Thomas, whose rekindled marriage with his once-estranged wife prompts each of them to assess their own relationship. Bree is surprised when Simon returns to her life, but is without her go to sounding board because Jess is still hurt about her manuscript. Kevin is concerned when he sees Connor’s girlfriend out with another man. Meanwhile, Nell continues her fight to preserve the town’s wishing fountain.
Trace and Abby hit an unexpected hiccup in their family dynamic after Trace takes on more of a father figure role. While Trace reading bedtime stories to the girls is a milestone in his relationship with Abby, the moment has an unexpected consequence when the girls question his role in their lives. Bree joins Jess on a trip to visit David and his parents, but Jess continues to harbor hurt feelings over Bree’s manuscript. Jess needs Bree’s support more than ever, though, when she discovers the real reason David’s parents want to meet her. Mick sees striking similarities between his troubled relationship with his brother and his sons’ relationship with one another when Kevin and Connor feud over Kevin’s meddling in Connor’s relationship. Meanwhile, Nell ramps up her persuasive tactics to convince the mayor to keep the wish fountain.
Abby joins Trace on tour with his band away from Chesapeake Shores but discovers that Trace’s fame may impact her family’s privacy. Though she enjoys seeing Trace in his element performing, Abby is shocked when paparazzi photos of them together surface and worries the attention will only get worse as Trace’s celebrity rises. Mick and Megan spend more time together as they help Thomas prepare for his vow renewal ceremony and experience a closeness they haven’t felt in years. The vow renewal ceremony also brings Connor and Kevin closer together, as Nell assigns them a time-consuming task that forces them to work out their differences. Meanwhile, Jess considers starting a life with David away from Chesapeake Shores, but Bree makes a troubling discovery about David’s mom that causes both of the O’Brien sisters to question Jess’ relationship.
Abby is burdened by continued paparazzi attention from Trace’s growing fame. As he works through his loneliness while on tour away from Abby, Trace writes a song for Abby, which prompts an unexpected reaction from Leigh. Mick tries to repair his relationship with Connor at Megan’s insistence, but their tumultuous history makes Connor reluctant to reconcile. Kevin is concerned when Sarah seeks adventure after a near-death accident at work, noticing similarities between her behavior and his after his wartime injury. Bree edits her novel with Simon’s help, and realizes she and one of her characters share the same drive for self-preservation that stunts their relationships. Meanwhile, Jess fears her relationship with David is over.
Abby learns her ex-husband is in a serious relationship navigates their new family dynamic. Abby misses Trace by her side as she explores the new co-parenting roles with Wes and his girlfriend. Pulled in many directions with work obligations, Trace misses out on family moments with Abby and the girls. Mick and Megan’s relationship continues to evolve, but is influenced by their past. Having worked independently for months, Jess adjusts to David’s return to the bed and breakfast. Also adjusting to a man in her life is Bree, who attempts to define her partially professional, partially romantic relationship with Simon. At the Chesapeake Shores Fire Department, Kevin enjoys a week of on-the-job training with Sarah. Meanwhile, Nell recruits Connor to investigate a contestant who is breaking the rules in an annual gardening competition, but a surprising discovery makes her rethink the plan.
Trace discovers that The Bridge has fallen into debt while he was on tour in and tries to repair the damage. Trace’s discovery prompts Mick to reconsider the terms of their partnership and to put aside friendship and family when business is at stake. Abby works to try and balance her stressful workload with being a “super mom” to keep up with Wes’ new fiancé. Jess is suspicious when David’s sister arrives in town looking for help with the business. Bree asks Nell to read her manuscript, but realizes the real test will come when she gives it to Megan. When Kevin doesn’t receive a job offer near Chesapeake Shores, Sarah considers relocating for a dream job. Facing relationship troubles of his own, Connor goes up against an ex-girlfriend in court. Meanwhile, Megan plays hardball when the mayor eliminates her job at the Arts Council.
Abby develops an unexpected friendship with a client, while Trace faces conflict at The Bridge. Though initially hesitant to work with her ex-husband’s fiancé, Abby helps her out tremendously and builds a new rapport with her while on a project. Trace, however, has a more difficult time at work and considers putting his friendship with Mick in jeopardy during a professional disagreement. Kevin graduates from his EMT program, but the reality of he and Sarah moving apart looms over the happy occasion. When Connor’s ex-girlfriend offers him a job, he senses familiar romantic feelings developing. At Nell’s urging, Bree shares her manuscript with Megan and begins to realize there are two sides to every story. Meanwhile, Jess receives devastating news about the inn that she fears will impact her whole life – including her future with David.
Chaos reigns with the closure of the Bridge, and the O'Briens are at war over Bree's manuscript. Meanwhile, Kevin is heartbroken visiting Sarah's family in Philadelphia, especially after he's offered his dream job back in Chesapeake Shores. When Trace realizes that he might not return to Chesapeake Shores, his relationship with Abby is cast into doubt, as Jess wonders if her relationship with David can survive without the B&B.
On the eve of the Chesapeake Shores Regatta, with Mick recruiting family members to join him on the water, Abby finally has to make a decision whether or not to break up with Trace for good. Meanwhile, Bree's relationship with Simon is rocked when Caroline appears, and David and Jess have to finally figure out their relationship without the B&B. In a surprise twist, a letter from Ireland might decide Nell's future.