A road trip with the devil's son is just about as complicated as you would expect.
After the events of last week, the Winchesters and Jack are headed back to the bunker in the impala. Dean still doesn't trust Jack but Sam thinks that he might be taking the loss of Castiel and Mary quite hard.
The Devil has a son and his name is Jack.
After walking into the room with the newly born, naked, young adult Nephilim, Sam is kinda terrified. He asks Sam if he is his father but doesn't get the answer he was hoping for. Then Dean runs into the room and shoots the Nephilim. The result is the Winchester brother waking up hours later with no sign of the Nephilim known as Jack.
From good to bad, from bad to worse.
After taking the life of another hunter, Mary Winchester's next target is none other than Sheriff Jody Mills. Meanwhile in the bunker, time is running out for Sam, Dean and Tony after being sealed in by Ketch. At the rate they are going, they might have three days of air before they die.
Mary Campbell: natural born killer.
After arriving at Mary's hotel, the Winchesters find it empty and their mother nowhere to be found. Moments later, Sam gets a call from Sheriff Jody telling him that Eileen Leahy was found dead in South Carolina after an apparent animal attack in an area that has never been known for it to occur.
We don't always do the right thing for the ones we love.
Since there mother hasn't checked in for more than a day, Alicia and Max Banes call Mary Winchester looking for help but instead, they get Sam and Dean. Dean is reluctant but Sam stresses that they have no leads on Castiel and may as well try to occupy themselves while they wait.
Ok, this girl has lost her mind.
After weeks without calling or texting, Castiel saunters into the bunker – much to the shock of Sam and Dean. Sam is happy to see him return but Dean has some harsh words for his angelic friend that made so little effort to get in touch with them. Castiel accepts the blame and admits that he was with the angels in heaven but they have nothing.
Sam: Dean, there could be a god up there.
Dean: I'm cool.
After getting a text from Mick about the latest strange killing, the boys are off to Tomahawk, Wisconsin to investigate.
You live by the code, you die by the code.
Just as they arrive back at the bunker, Sam and Dean see Mick sitting at the table. Mick begins to tell them about a cosmic shockwave that recently hot his radar but they already know – it's the Nephilim.
When a werewolf attack leaves one boy dead and his sister alive, the Winchesters will need the help of a not-so-old friend to solve the case.
After arriving in Wisconsin to look into the latest werewolf attack, the Winchesters, along with Mick Davies, have their work cut out for them. Dean isn't thrilled at the idea of a tag along but Sam has to babysit so it should be fine.
Every hell hound has its day.
Fresh off of a hunt and just getting back to the bunker, Sam gets a text message about a new case in Nebraska. Dean is curious about how Sam has something new so quickly but Sam brushes him off and tells him it's a new algorithm that he's developed to track incoming cases.