Are we ready for "Family Feud?" This week’s episode kicks off six months ago with a woman being murdered in Andover, Mass., as in 80s style horror film murdered. Back in present day, Sam and Dean are still trying to locate Kelly, Lucifer’s baby mama. In the meantime, Sam comes across a case in Iowa, where a teacher was brutally murdered (sounds familiar) in a Des Moines museum. Elsewhere, Mary continues to secretly work for the British Men of Letters and things are getting a bit awkward with Ketch. Down in hell, Crowley explains all to Lucifer, who ended up not back in the cage, but back into his old vessel, and at Crowley’s mercy.
As it turns out, the case in Des Moines leads them to a nautical artifact connected to the very ship Crowley’s son, Gavin, was supposed to have taken to America. The ship that he was supposed to have died on. And Gavin may hold the key to solving the case.
In a diner, a nervous and pregnant Kelly is being waited on by an angel, which can’t be good. Back in hell, Lucifer is torturing Crowley with the knowledge his unborn baby is out there… waiting to be born. Crowley, having been convinced Sam and Dean handled the baby business, is none too pleased with the boys lie and refuses to help them reach out to Gavin. So the boys go for the next best thing, Grandma (Rowena).
Back at the diner, the two angels go after Kelly, but she's saved by a yellow-eyed demon who offers to protect her. Wait… we know this chick. Its Ramiel's sister, Dagon, the Princess of Hell, and she’s got her eye on Lucifer’s baby. Dagon convinces Kelly that baby she’s carrying can change the world.
Rowena and the boys locate Gavin on a bus, who is willing to help. As it turns out the ghost is Gavin’s girlfriend, Fiona, who had snuck onto the ship to be with him and is now tethered to a locket he gave her. They reach out to Fiona and learn she was tortured by others on the ship. She was alone and scared and now is a vengeful ghost. And since her bones are buried at the bottom of the ocean, there’s no way to burn them. Dean suggests that if they could somehow go back in time so Gavin could get on the boat and die, as he was meant to do. Gavin agrees, since it is the right thing to do. As Rowena points out, he’s not like she and Crowley. Though Crowley tries to stop him, Rowena and the boys get Gavin back in time and history resets itself. None of the murders Fiona was responsible for ever happened. The tension between Rowena and Crowley grows and they don't separate on the best terms.
Back at the bunker Mary confesses to the boys that she’s been working with the British Men of Letters, who earlier told her she needed to “disengage” from her sons. Though angry, they agree to hear her out.
Meanwhile, Dagon whisks Kelly away, and down in his cage, Lucifer smiles and says her name, “Dagon.”