After the Winchesters find Castiel, they reunite him with Jack. Together, the group goes to Tombstone to check out a case of grave robbing, and Jack makes a serious mistake.

To obtain a tracking spell that can locate Jack, Sam and Dean make a deal with the new king of crossroad demons. If the brothers steal a trunk for the new demon, Barthamus, then he'll give them the spell. However, things don't go quite as planned.