Sam and the Brides arrive at Fort Collins, where Hansen reveals a secret for raising the Dark One.

A grieving and aimless Axel rescues an enigmatic Max, who returns the favor with a job offer.

A rogue black ops team led by Onyx breaks into Kord Industries and steals something lethal. Oliver struggles to connect with William so he reaches out to a surprising source…

The angels fight each other in bloody civil war, and Castiel is swept up in the conflict. Meanwhile, Dean realizes that Ezekiel is not who he claims to be and…