As the whole O'Brien family reunites in Chesapeake Shores for the first time in years, Abby attempts to learn from her own father's mistakes to avoid missing out on her young daughters' lives.
Elizabeth and Jack try to put their differences aside to stop Julie and Tom before they make another mistake, while Gowen targets Abigail's Cafe in his next underhanded scheme.
As Jack and Faith's friendship begins to complicate his romance with Elizabeth, Abigail pitches in to help a struggling community and a wave of kindness in Hope Valley has everyone opening their heart for a grand occasion.
Elizabeth has finished her manuscript. A visitor causes trouble for Nathan and Allie. Rosemary and Lee cut their trip short. Faith arrives back from medical school. Clara and Jesse haven't been getting along.
A geyser erupts at the oil rig and everyone in Hope Valley drops everything to help. Nathan is summoned for an inquiry by a Mountie from his past and Jesse takes a liking to driving Lee's motorcycle.
The inquiry begins, and Nathan starts to question his own actions. Meanwhile, a new family, the Canfields, buy Gowen's cabin and Elizabeth welcomes them to Hope Valley. Lee's sister and niece arrive in Hope Valley.
Elizabeth and Allie plan a birthday party for Nathan. Lee and Rosemary weigh business responsibilities against family time. Lucas settles into his role as governor.
A health scare has everyone in Hope Valley worried about one of their own. Nathan is finally going to get Allie's adoption finalized. Lucas starts to become suspicious of Christopher's behavior.