The official trailer for the action-horror film "Onslaught" debuted today, June 2, 2026 [2].

The film represents a high-stakes blend of genetic sci-fi and survival horror. By combining a maternal protection plot with military-grade antagonists, the production aims to capture a broad audience interested in both visceral action and psychological tension.

Directed by Adam Wingard, the story is set in a desert environment where a rogue squad of genetically engineered super-soldiers has broken loose [1]. The plot follows an Army sniper who must fight to protect her young daughter from the escaped soldiers [1].

Adria Arjona stars as the sniper. She is joined by an ensemble cast that includes Alex Pereira, Drew Starkey, Rebecca Hall, Reginald VelJohnson, Michael Biehn, Eric Wareheim, and Dan Stevens [1].

The trailer emphasizes the isolation of the desert setting and the overwhelming power of the engineered antagonists. The film's central conflict focuses on the sniper's attempt to survive and ensure her daughter's safety against an enemy designed for warfare [1].

"Onslaught" is scheduled to open in theaters worldwide on Sept. 4, 2026 [1].

“A rogue squad of genetically engineered super-soldiers that break loose in the desert.”

The release of this trailer signals a strategic push into the action-horror genre for Adam Wingard. By utilizing a high-concept premise involving biological weapons and a familial survival core, the film attempts to bridge the gap between traditional military thrillers and creature-feature horror, targeting a release window typically reserved for late-summer genre hits.