You Only Had to Ask, Michael

Michael goes into heat every five years- something he isn't exactly happy about, but he can't help his nature as a non-alpha. Everything is fine- the Apocalypse is on schedule, Lucifer is running free, the Winchesters aren't saying yes- okay, maybe things aren't going so well. But still- nothing too bad. Until everything goes wrong and hes locked in the Cage with Lucifer. An Alpha.