I'm assuming this happens on both the day of Halloween and November first, aka overnight? Can people just wake up? Are they stuck for some reason? If they're stuck, does the event last longer? Is there some kind of Inception protocol to wake them up/check if they're still dreaming? Or do they have to Defeat the Boss? Is it just certain people that are stuck, or is this a blanket affect that will fuck up half the city/country/whatever? Do not-dreaming people want to deal with the planes falling out of the sky? If they can be woken up, is there a greater goal at stake to make this a threat, ie a team proactively entered the Dreamscape (I'm pretty sure that's a Thing) in order to track down a villain? If you die in the nightmare, do you...die, do you wake up, can you not actually die just get mutilated?