The film introduces Grace, a young woman marrying into the eccentric and ridiculously wealthy Le Domas family. On her wedding night, she's informed of a family tradition: a game chosen by a mysterious antique box. To her horror, the game selected is 'Hide-and-Seek,' which, in the Le Domas household, isn't child's play. Grace soon discovers that her in-laws are not just eccentric, but deadly serious, believing they must sacrifice her by dawn to uphold a sinister pact and prevent their family's demise. What begins as a charming evening quickly devolves into a desperate, cat-and-mouse struggle for survival within the sprawling family mansion, as Grace navigates murderous relatives, hidden passages, and her own escalating terror.

What truly elevates 'Ready or Not' beyond a simple slasher flick is its razor-sharp script and the masterful execution of its horror-comedy premise. Samara Weaving delivers a star-making performance as Grace, perfectly balancing vulnerability with a fierce, evolving determination. Her transformation from a naive bride to a blood-soaked, defiant survivor is utterly captivating. The ensemble cast, including Adam Brody, Andie MacDowell, and Henry Czerny, are equally brilliant, each portraying their deranged family members with a delightful blend of aristocratic menace and comedic timing. The film expertly juggles genuine tension and jump scares with laugh-out-loud moments, often derived from the Le Domas family's absurd dedication to their macabre tradition and their hilariously incompetent attempts to kill Grace. The direction is tight, making excellent use of the mansion setting, transforming it into a character itself. Themes of class struggle, tradition versus modernity, and the dark underbelly of wealth are subtly woven into the frantic action. While some might find the ending a bit polarizing, it undeniably commits to its premise, leaving a lasting, satisfyingly gruesome impression.