Three Hunters, An Angel, and A Baby (Destiel Fanfic)

What will happen when Dean goes on a hunt and brings back an unlikely guest? He, Mary, and Sam have already been tasked with the mission of becoming the heads of the new North American branch of the Men of Letters. And what will happen when Chuck and Amara return so Chuck can reconstruct heaven? Old faces will return and cause chaos for these three as they try to navigate through all of the madness of being hunters while one of them tries to join up with an angel to be a parent.