Sarah and Kevin come together with exciting news. Connor and Margaret's law firm struggles to make ends meet, and when Mick's pill addiction starts to noticeably affect his life, the O'Briens must rally together and stage an intervention.
Mick and Megan reunite. Sarah and Kevin's baby arrives, starting a week of celebration bringing the O'Briens together one last time in Chesapeake Shores.
Kevin learns something new while David questions what he thought was true. Bree finds she and Luke share a birthday. Kevin discovers the gender of the baby. David confronts his father.
Various issues are troubling the O'Briens. Mick is in denial about his addiction, Margaret passes the bar, Jess pursues a new idea, and Bree tries mending the rift between her and Luke.
The O'Brien family comes together in the aftermath of Connor's heart attack; Jess and David deal with media fallout after Dennis Peck goes on the run; everyone finally discovers who Abby called.
Abby and Evan participate in a scavenger hunt. Mick and Megan have a serious talk about past relationships. Connor breaks out to return to his apartment. Bree helps Luke with night terrors.
Abby plans a second date with Evan. Deidre and Alexandra Peck visit the B&B to avoid negative media attention, and with Connor recovering, Megan decides whether to work in L.A. or stay to help.
Secrets are exposed to reveal the past can't be escaped. A DNA test reveals a location for Evan's father. Jess hosts a historical reenactment. A Hollywood star comes to offer Bree a movie deal.