While Wes' new practically perfect girlfriend reminds Abby that she might be the only "mom" in Carrie and Caitlyn's life; David and Simon's presence in Chesapeake Shores puts Jess and Bree in an unusual position.
Trace discovers that the general manager of The Bridge stole large sums of money; Abby realizes that she can't be a perfect boss, parent and girlfriend; David Peck's sister arrives, threatening Jess and David's relationship.
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.
Battle lines form after Megan reads Bree's manuscript; Trace and Mick disagree over the future of the Bridge; with Jess's B&B's being devoured from within, it appears that the same might be true with the O'Brien family.
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; Trace and Abby's relationship is cast into doubt.
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; Sarah is injured on the job.
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; David and Jess have to finally figure out their relationship without the B&B.
