There will be an uneasy truce between Scarecrow and Batman... because one day the sun will start dying, and humanity will need to reignite it with dragons in order to survive.
Yay! More poorly choreographed lightsaber battles! In a Batman movie, you say? Screw it, if he did the Star Wars prequels, he can do anything!
. . . Oh! I just got that. It took me about a day, partly because I never saw Sunshine and partly because I forget that anyone else besides me has seen Reign of Fire.