The birth of Jack (Alexander Calvert) leaves the Winchester brothers with differing opinions on how to deal with a Nephilim.
Feeling as if they are running out of options, Sam (Jared Padalecki) and Dean (Jensen Ackles) agree to steal a mysterious trunk belonging to a demon named Barthamus (guest star David Cubitt), in exchange for a locater spell the Winchesters can use to track down Jack.
Dean gets to live out his boyhood fantasy when he comes face to face with a famous, gun-slinging outlaw.
As Sam (Jared Padalecki) and Dean (Jensen Ackles) continue their search for Jack (Alexander Calvert), with Asmodeus (guest star Jeffrey Vincent Parise) hot on their trail, they stumble across a familiar foe.
Castiel (Misha Collins) finds his way back to the Winchesters.
Castiel (Misha Collins) is reunited with Jack (Alexander Calvert) and together with Sam (Jared Padalecki) and Dean (Jensen Ackles), they head to a sleepy old western town to investigate a murder.