As the town's annual lantern festival nears, Trace and each of the O'Briens attempt to put their own challenges aside so four generations of O'Briens can come together for the lantern festival.

Nashville is calling Trace, but leaving town creates a difficult distance between he and Abby. Trace hits the road to record an album with his ex-girlfriend Leigh, 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. Ready to move on from his past relationship, Kevin tries to impress a free spirited firefighter on their first date. As Mick continues his plans to develop family land, Nell attempts to have him reconcile with his brother, Thomas.

In "Buried Treasures," the O'Briens dig up the past - both literally and figuratively - on "Chesapeake Shores." 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. At her bed and breakfast, Jess deals with a high maintenance customer, but gets more than she bargains for when his true identity is revealed. Mick and Thomas continue to spar over a family land development deal, never seeing eye-to-eye about the past or the future. Megan reconnects with the family by giving Connor dating advice and tutoring her granddaughters.

Chesapeake Shores is filled with music as the town awaits the grand opening of The Bridge nightclub in "Grand Openings". As the nightclub opening nears, Trace spends late nights practicing with Leigh and his band, while 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. Frustrated with her own work prospects, Megan (Barbara Niven) receives an endorsement from an unexpected ally. Jess begins to develop feelings for someone at work, while Bree is surprised at her bookstore by a new admirer - and famous author. Connor reconnects with former flame Danielle, and Kevin has eyes for a free-spirited firefighter. Sensing romance in the air, Nell hosts a dinner for her grandchildren and their new love interests.

A viral video and a birthday have two residents of "Chesapeake Shores" receiving special treatment in "The Royal Court." After his band's music video goes viral, Trace receives offers from music executives, but tries to convince his band to give Mark Hall another shot. Abby, Nell and Megan spend some family time together preparing a princess birthday party for Carrie. Kevin finds inspiration to follow his passion on a trip to visit one of his fallen army friends' mothers with Bree. Watching the shop in Bree's absence, Jess discovers that running a bookstore is not as easy as she thought. Connor turns to Danielle when he finds his career direction shifting. After Mick refuses to use incriminating information against his brother Thomas, he must find a new investor for his development deal.

After Mark offers Trace and his band a worldwide tour deal, Trace and Abby worry about how it might impact their future together. As Nell ponders a lost love from her past, Abby, Jess, and Bree are faced with the possibility of losing their new loves.

Jess and Bree discover David's parents' secret plans. Abby joins Trace on tour. Thomas's vow renewal sparks Mick and Megan to re-examine their own relationship. Connor reconciles with Kevin.

With Trace still on the road, Abby and Trace find a way to combat the loneliness. With Simon in town, Bree has to define a new normal, as does Mick and Megan, who begin to suspect that old feelings never go away. Meanwhile, Sarah is injured on the job, and Kevin has to take a step back into his own past to help Sarah move forward.

Wes's new girlfriend reminds Abby that she might not be the only "mom" in Carrie and Caitlyn's life, and David and Simon's presence in Chesapeake Shores puts Jess and Bree in an unusual position.

Chaos reigns with the closure of The Bridge, the O'Briens are at war over Bree's manuscript, Kevin is heartbroken visiting Sarah's family in Philadelphia, and Trace realizes that he might not return to Chesapeake Shores.

Abby finally has to make a decision whether or not to break up with Trace for good. Bree's relationship with Simon is rocked when Caroline appears, and David and Jess have to finally figure out their relationship without the B and B.