When Cabot Howards exwife Leana flees the pandemic with their son Porter to the backwoods town of Rookfield Cabot sets off after them Once he arrives however he finds Leana is in hiding her family wont hand Porter over and the townsfolk are deadly serious about always wearing masks The towns children dress like little plague doctors and the adults are hellbent on getting Cabot out by nightfallampnbspDespite being alone and under attack Cabot wont leave without his son Nothingnot exinlaws not the sheriff not even whatever monstrosity might be lurking in the woods just behind the barnwill stop Cabot from getting them out of Rookfield