A young bride must play a deadly game of hide-and-seek if she wants to marry into a wealthy (but wildly eccentric) family.

“It’s just something we do when someone joins the family,” says her groom-to-be.

via ARS Technica:

Grace (Samara Weaving) can’t believe her good fortune when she falls in love with Alex Le Domas (Mark O’Brien), a member of a wealthy gaming dynasty—although the family prefers the term “dominion.” After a picture-perfect wedding on the family estate, Alex informs her that there’s just one more formality to be observed: “At midnight, you have to play a game. It’s just something we do when someone joins the family.”

That game turns out to be hide-and-seek, except Grace soon discovers that, as played by the Le Domas family, it has less in common with an innocent children’s pastime and more with the classic 1924 short story “The Most Dangerous Game.” Grace is the prey, and she must elude detection until dawn to avoid being killed in a bizarre ritual sacrifice.

Starring Samara Weaving, Adam Brody, Mark O’Brien, with Henry Czerny and Andie McDowell.

Ready or Not hits theaters August 23, 2019.