"Abyss" part two! For years Batman used the darkness as a weapon, but now a new enemy turns that darkness against him! Batman must team with Batman Inc.'s mysterious new benefactor to bring the deadly Abyss into the light! Wait-who is Batman Inc.'s new benefactor? Backup: Mia "Maps" Mizoguchi must play detective when a classmate goes missing... Even with Batman's help, can this dynamic duo solve this mystery?