It's the court hearing in Hell, the 6 sins are about to start the hearing, all the Hellbon and wealthy above Imps, the most hated and mistreated type of demons. Him, Loona, Moxxie, and Millie, are about to be tried.

Lucifer didn't show up again, when there's a sudden shuffling heard from Lucifer's seat, then, they turn to see you, Lucifer's sister. They all gasp, suprised, especially Satan.