sentences:  Sam Oliver (played by Bret Harrison), the protagonist of the show, is a dropout and all-around slacker who, due to a deal that his parents made to save his father's life, is coerced into becoming a bounty hunter for the Devil after turning 21 years old.According to the terms of the contract, Sam would serve the Devil by using various tools, called vessels, to recapture souls who have escaped from Hell.After capturing an escaped soul with a vessel, he would then drop the vessel and soul at a portal to Hell, which was the local Department of Motor Vehicles in the show.