Elizabeth has finished her manuscript and tries to come to terms with how she feels about Nathan and Lucas. An unwelcome visitor stirs up trouble for Nathan and Allie. A homesick Rosemary and Lee cut their South American trip short. Faith returns from medical school. Clara and Jesse haven't been getting along. Fiona starts a new business venture.

The sudden arrival of Lucas' mother makes Elizabeth more than a little nervous. Lee injures his back. A newcomer's arrival causes Rosemary to reflect on what she wants in life.

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.

It's graduation day at the Jack Thornton School house as well time for parent-teacher conferences. Rosemary and Lee adjust to having family in town. A letter from Dottie sends all the Coulters reeling. Clara learns Jesse made a big mistake.

Elizabeth wonders if she is truly ready to let love in again. Rosemary wonders what her purpose is. Clara and Jesse sort through their issues. Carson receives an amazing opportunity. A stranger named Christopher comes in town.

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.

Elizabeth focuses on teaching Angela how to read braille. Rosemary and Lee struggle to give Rachel the freedom she was promised in Hope Valley. Bill feels displaced when he's asked to finally return his Mountie uniform.

Elizabeth is distraught over the reveal of Nathan's secret. Everyone helps a couple prepare for their wedding. The bachelor and bachelorette parties stir up mixed emotions from the guests. A mysterious businessman arrives in town.

Florence and Ned's wedding in Hope Valley leads every couple to evaluate their relationships. Rosemary discovers there is more happening in Hope Valley than everyone realizes, and she decides to get to the bottom of it.

Landis, the school inspector, arrives in town and causes trouble for Elizabeth. Rosemary finds her calling; a search is called when one of Hope Valley's residents is lost. Carson and Faith's relationship is put to the test.

Elizabeth has finally realized who she's supposed to be with. Big changes are coming to Hope Valley. The town rallies together to say goodbye and good luck to one of its own.