Thefilmhomesinon18-year-oldAlexwho’sbeenafanoftheArthurfantasyfilmseriessincehewasachild.Whenhisclose-knitgroupoffriendssurpriseshimwithtriptoanabandonedhousewherethefilmwasshot,theyunwittinglywalkheadlongintoatwisted,mortaltrap.Whatwasonceachildhooddreamsoonturnsintoaveryrealnightmare...