For her failure to subdue Lucifer, Belial imprisons and torments Satan, forcing her to guard the gates to Hell against Lucifer's impending intrusion. But prior to her invasion, Lucifer has utilized her new abilities as a demon lord to draw power from the lingering pride in every human's soul, thus gaining entry. As Lucifer and Leviathan make their way down to the lower levels of Hell, Belial attempts to rally the other Mortal Sins, but except for Astaroth they all refuse to follow her any longer...