"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?