In 1969, a young Jud Crandall has dreams of leaving his hometown of Ludlow, Maine behind, but soon discovers sinister secrets buried within and is forced to confront a dark family history that will forever keep him connected to Ludlow.

A young couple travels to Sweden to visit their friend’s rural hometown and attend its mid-summer festival. What begins as an idyllic retreat quickly descends into an increasingly violent and bizarre competition at the hands of a pagan cult.