READY OR NOT follows a young bride (Samara Weaving) as she joins her new husband's (Mark O'Brien) rich, eccentric family (Adam Brody, Henry Czerny, Andie MacDowell) in a time-honored tradition that turns into a lethal game with everyone fighting for their survival.

In Baton Rouge, Louisiana, the evangelical Reverend Cotton Marcus was raised by his father to be a preacher. He agrees that the filmmaker Iris Reisen and the cameraman Daniel Moskowitz make a documentary about his life. Cotton tells that when his wife Shanna Marcus had troubles in the delivery of their son Justin, he prioritized the doctor help to God and since then he questions his faith. Further, he tells that exorcisms are frauds but the results are good for the believers because they believe...