The entirety of the majestic Sky Casino is turned against the Hunting
Dogs when they uncover a terror plot that will shake the very
foundations of the world. Their only hope is to capture the casino's
general manager, Sigma, the man without a past! Meanwhile, Atsushi and
Kyouka fight from the shadows, seeking to prove the innocence of the
detective agency through their actions. Can they find the all-powerful
"Page" that's at the core of the Decay of the Angel's villainous plot?