One year after the defeat of the Leviathans, Dean escapes Purgatory, with a vampire-comrade-in-arms named Benny, and reunites with Sam who has retired from hunting much to Dean's anger. Not long after Dean discovers that Kevin had escaped Crowley's abduction months ago which Sam was unaware of. Kevin reveals that he stole another Word of God from Crowley about Demons and discovered the means of closing Hell forever with all demons inside. Now reunited Sam and Dean embark on their monster hunts while Kevin continues to translate the tablet to stop Crowley and his plotting.