Elizabeth receives a sentimental surprise in time for Little Jack's first day of school. Nathan trains a new Mountie cadet. Rosemary and Lee make a landmark decision.

When the comic book craze sweeps Hope Valley, Elizabeth teaches her students through nature. Rosemary launches a radio show, and Lucas meets a new political player.

Elizabeth and Nathan uncover Oliver's secret. Rosemary worries Lee has a secret of his own. Allie's interest is piqued when Earl Wyatt returns to town.

Elizabeth helps Allie plan a birthday dance. Nathan struggles with Allie growing up. Rosemary and Bill team up again to investigate a train robbery. Lucas lends Edie a hand.

Elizabeth develops a new method of teaching. Nathan goes undercover. A familiar face returns to Hope Valley with an unlucky heiress in tow. Lucas and Lee face their differences.

Allie and Oliver discover a threat. Rosemary invites the kids to debate Lucas on the radio. Bill interrogates a suspect with an old friend's help. Elizabeth fights a cold.

Elizabeth and Nathan's date night leads to an undercover operation at a glamorous party. Lucas and Edie grow closer over cards. Rosemary holds auditions for a play.

Rosemary's play gets a new venue and a new cast. Elizabeth takes her curriculum to the airwaves. Faith helps a friend make a decision. Lucas faces unexpected opposition.