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 to help her solve the problem. Corinne pushes Danny to reveal a secret that he's been keeping from everyone.

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.

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.

When Corrine confides in Sarah about what happened with Danny, Corinne also admits that she needs Sarah's help with something she has always questioned. Sarah confronts Danny about what happened, leaving Danny to make a decision about his future.

Sarah is offered a chance for international recognition of Greylock but the price may be too high. Danny offers to help Corinne with her legal woes but she asks him for something unexpected.