A paranoid man embarks on an epic odyssey to get home to his mother.

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.

When Ellen, the matriarch of the Graham family, passes away, her daughter’s family begins to unravel cryptic and increasingly terrifying secrets about their ancestry.