Bill and Abigail are skeptical of Lucas, a newcomer to Coal Valley. Bill investigates the mystery man with some help from a spy at the town's new switchboard. At the schoolhouse, Elizabeth teaches one of her students to find his confidence. Intrigued by the stock market, Abigail solicits Gowen's investment help. Meanwhile Clara applies for a job at the saloon.
After a judge is intimidated into releasing two gunrunners, Bill recruits an old friend to help him track the criminals down. Abigail and Lucas clash over the saloon's late hours. Carson and Faith must decide whether to pursue their feelings.
A new Mountie arrives earlier than expected. Bill and Nathan jump right to work when Lee's payroll is stolen. At the school, friends turn against each when a mock debate goes awry; Carson and Faith try to keep their romance a secret.
Elizabeth confronts Nathan about his parenting style. Bill is offered a judgeship, but is unsure if he wants to take it. Rosemary hosts a girls-only night. Faith and Carson's romance blooms. Jesse finds surface oil, but can't afford to drill.
Jealousy breaks out in Hope Valley when Gowen strikes oil, which splits the town into the haves and have-nots. Nathan urges Bill to re-examine the judgeship offer. Rosemary struggles to reveal an emotional concern to Lee.
Trying to stay on Elizabeth's good side, Lucas sets up a library for the town. Allie tricks Harper, Robert and Opal into believing the town has a haunted house. Bill conducts his first trial as a judge.