They had been settled into the bunker for about a month now without any chaos erupting. No demons making their lives hell, no Luci dragging them TO hell. Things were pretty great.
Gabriel had arrived around the second week.
Once Dean was satisfied with the number of bullets he'd put in him, he agreed to let Gabriel stay, on the condition that he couldn't terrify, maim, or kill anyone in the bunker.
And he couldn't touch the impala, a rule instated only after Dean came out and saw a neon yellow paint job on his baby. Gabriel earned another bullet in his leg for that one.
Overall though things had been going well. Dean got to mock Sam about Gabriel's shameless flirting, Sam got to torment Dean in return by "accidentally" opening Destiel fanfiction on the computer and leaving it for Cas to find.
Tonight however, they called a peace treaty, because Cas had discovered something very important: the Guardians of the Galaxy.