When the Dark Knight crossed over into Sky and came back
Bruce: Three years ago, I had my worldview turned upside down. Three years later, I had Gotham's worldview turned upside down.
Alfred: You might not believe this, but the master went to bed and woke up as a Light (Child).
Superman noticed his partner had suddenly learned to fly, though he always liked to bring someone along, and flew incredibly fast. Zatanna once got the bright idea to take a ride on the "Batmobile Airlines," and threw up after they landed.
But the good times didn't last. The barrier between worlds shattered, and the Golden Wasteland merged with Gotham. As Dark Dragons roared past, the Dark Knight had no choice but to team up with friends from both worlds to... roast the freaks of the Golden Wasteland :D
Theme: Giving the master warmth and light