Three friends rent a house in coastal East Lyme, Connecticut in an attempt to revive a neglected friendship, but when a peculiar neighbor intrudes, tensions rise and a supernatural force takes hold. Following a fireside telling of the town’s Lyme disease lore, they each begin to experience strange symptoms including a shared vision, none of which they divulge to one another. By the next nightfall, the mysterious forces have pushed the fraying friendship to its limits, revealing what each would do to help the other survive.