The bucolic tranquility of Greylock, New Hampshire is upended when a massive vein of coltan - an incredibly valuable mineral used in tech - is discovered under the town. State-backed mining company Lydon Industries swoops in with plans to extract the mineral, which will wipe Greylock off the map. With her friends and family in danger of losing their homes, rebellious high school teacher Sarah Cooper vows to stop Lydon's bulldozers. (imdb)