
Elizabeth Thatcher is a young teacher accustomed to high society, so she experiences culture shock when she gets her first classroom assignment in Coal Valley. Life in the small mining town is filled with challenges. A recent explosion has killed more than a dozen of the town's miners, compelling the widows of those men to work in the mines to earn money. Constable Jack Thornton, also a newcomer, is not as welcoming, because he believes Thatcher's wealthy father doomed his career by assigning him to Coal Valley so he could protect Elizabeth. Over time, though, Elizabeth and Jack become closer and begin a relationship. Janette Oke's books about the Canadian West inspired the series.

Elizabeth goes on a trip with Lucas and must face her growing feelings for him; Jesse and Clara adjust to sharing a home; Lee and Rosemary are challenged with watching Little Jack.

A dangerous windstorm puts Hope Valley at risk; Elizabeth takes half the class on a field trip while Carson is the substitute teacher for the rest; Jesse causes concern.

Elizabeth and Nathan try to resolve their differences; Rosemary learns a secret about Lee; Elizabeth feels betrayed by Lucas, but helps him get the oil company's records from Gowen; Nathan goes undercover; Fiona gets bad news.

Elizabeth hears news about her book; Lee gets a surprise that stirs up wounds from his past; Fiona tries to find a way to stay in Hope Valley; Lucas makes a last-ditch effort to preserve his partnership in Gowen Petroleum.