Beelzebub warns Camio things are different now that the latter's identity is revealed, though Camio replies that he is now interested in the covenants he and Dantalion made to Solomon long ago. Meanwhile, Stradford is putting on a production of the play Hamlet with William as the director, Dantalion as Claudius, and Sytry as Ophelia. Later, Gilles de Rais comes to the school to remind Dantalion and Sytry that they must attend the annual Great Sabbat in Hell, which will also be attended by the Four Kings. At the party, it is revealed that Camio is the rumored offspring of Lucifer and has power surpassing that of the Four Kings. Sytry's uncle, Baalberith, sends a horde of demons to the human world to kill William in a plot to take Solomon's soul. After Dantalion flashbacks to a memory with Solomon and remembers that it was Solomon's wish to die by Dantalion's hands someday, Amon informs Dantalion about Baalberith's plan. Sytry, Dantalion, and Baphomet rushes to the human world to protect William, who still refuses to elect anyone for Lucifer's throne. When a demon was about to attack William, the barrier that was placed on him by Kevin earlier appears and surrounds Dantalion, oppressing his powers and causing him to go berserk. Before Dantalion could kill William, Camio arrives to stop Dantalion and orders the demons away. At the end of the Sabbat, Baalberith remarks to Astaroth and Beelzebub that their candidates are as infatuated with Solomon as they were in the past. At the school, William brushes off what happened with Dantalion to help ease the latter's guilt. On the night of the play, William is forced to play as Hamlet and scolds Dantalion and Sytry for ruining it with their antics.
마계와 인간계의 경계가 약해지는 대안식일을 맞이하여 단탈리온과 시트리는 어쩔 수 없이 마계로 돌아가게 된다.
대리왕 후보들이 한자리에 모이는 마계 파티에서는 미묘한 긴장감이 흐르게 되는데...
한편, 윌리엄은 부탁이 있다는 케빈의 말을 듣고 교회로 향한다.
