The bucolic tranquility of Greylock, New Hampshire, is upended when a massive vein of an incredibly valuable mineral is discovered under the town.
Sarah is faced with her first major challenge as a leader when Greylock's power is shut off. Bella pushes boundaries with her dad when it comes to spending time with Tyler and Sarah.
When the governor of New Hampshire closes Greylock's borders, Sarah calls on Bella, Tyler, and Maya's spunky teenage energy to help her solve the problem. Corinne pushes Danny to reveal a secret that he's been keeping from everyone, including Sarah and Ellen. Meanwhile, an extreme act from Grover reveals the depth of his struggles with the recent loss of a loved one.
When Sarah discovers that everyone in Greylock is being charged foreign transaction fees, she enlists her friends to help her create own currency. Grover shares with Danny what really happened to Corinne after he left. Bella and Tyler try to find a way to make their relationship work long distance. Meanwhile, Ellen asks Sarah for help with her sobriety, which forces Sarah to learn to let go.
With Lydon's workers causing problems, Sarah drafts an executive order to help protect Greylock's residents, but her new law leaves one of their own facing consequences instead. Grover introduces Danny to a new friend, but they have more in common than Danny realizes. Maya feels abandoned by everyone in her life, but Luis proves he's in her corner. Meanwhile, AJ ignores Corinne's advice when it comes to her relationship status.
After a damaging magazine article is written about Sarah, she realizes that it's time for Greylock to create a more representative government. With an election open to anyone, Danny, Maya, AJ, and Corinne take a shot at the four available seats.
With the government newly formed, Greylock's fledgling congress must decide their immigration policy now that new people want to immigrate. Sarah and Danny are faced with someone from their past and have different reactions to the visitor. AJ shares a personal secret with Grover to encourage him to get the help he needs. Danny helps Corinne with some legal paperwork, but Corrine gets more than she bargained for. Meanwhile, Maya discovers that Tyler is a talented photographer and submits his photos to an upcoming art show, leaving Tyler upset.
After an unexpected snowstorm leaves Greylock stranded with no plows, Sarah and the town come up with a creative plan to clear the roads. During the storm, Sarah gets two unexpected guests and tries to figure out how to navigate both circumstances.