A missing child is a parent’s worst nightmare. But what if an entire classroom full of children ran away from home on the same night?

That’s the premise behind Weapons, the new film from Barbarian writer/director Zach Cregger. The official synopsis reads, “When all but one child from the same class mysteriously vanish on the same night at exactly the same time, a community is left questioning who or what is behind their disappearance.”

The teaser features scenes of multiple children running across yards and through the streets at night, as a voiceover calmly states, “Those kids walked out of the homes. No one pulled them out. No one forced them.”

Julia Garner stars as a teacher whose entire classroom of kids goes missing in the middle of the night. Josh Brolin plays one of the many parents demanding answers to questions like ‘is their teacher responsible for the children’s disappearance?’ and ‘does this have anything to do with a recent spate of murders in town?’.

One source indicated that Weapons is part of Cregger’s “Barbarian Cinematic Universe.” Alden Ehrenreich, Austin Abrams, Cary Christopher, Benedict Wong, June Diane Raphael, Toby Huss, Jaymes Butler, and Amy Madigan also star. Cregger directed from his own screenplay.

Clips shown earlier this month at Cinemacon showed a mob of parents at a school meeting frantic over their vanished children, Garner’s character walking into a classroom in the middle of the night to find a group of spooky kids at a desk, and a bunch of blood-curdling images including (trigger warning) a creepy clown.

Weapons will begin terrorizing theater-goers on August 8th.