While Rowena (guest star Ruth Connell) tries to consolidate her power to protect herself from the Winchesters, Sam (Jared Padalecki) and Dean (Jensen Ackles) search for a missing baby connected to the Darkness. Meanwhile, Castiel (Misha Collins) struggles to heal and Crowley (Mark Sheppard) tries to find a way to use the Darkness for his own personal gain.