"Back in 1835...Samuel Colt made a special gun. They say this gun..can kill anything." Sam and Dean Winchester have been hunting the supernatural for years. From demons, to ghosts, to vampires, you name it. They've seen it all. They are now on the clock to retrieve the special gun for an upcoming war with the demons. It's the only shot they have along with their demon killing knife. But when unusual possible allies cross paths with the brothers, who are also looking for the colt, things may change for them. Will they team up and find it together? Or will they want to get it to it first?