Things go bump in the night, but in "Midsommar," even greater evils await in the bright daylight.

The new horror movie from "Hereditary" director Ari Aster doesn't hide its monsters in the shadows; they exist in the sun-kissed, flower-strewn beauty of a summer festival in Sweden.

In what Aster has described as a breakup movie, Dani (Florence Pugh) and Christian (Jack Reynor) are a young American couple whose relationship is crumbling. But after a family tragedy keeps them together, a grieving Dani joins Christian and his friends on a trip to a once-in-a-lifetime midsummer festival in a remote Swedish village.

But what begins as an idyllic retreat quickly devolves into a violent and bizarre competition at the hands of a pagan cult.

“It’s very macabre," Aster told fans earlier this year. "But people shouldn’t go in expecting ‘Hereditary.’ It’s a ‘Wizard of Oz’ for perverts.”

"Midsommar" opens in theaters July 3.