Exorcists Sister Rosette and her partner Chrono clean the streets of demons.

Rosette is entrusted with a new sacred bullet of untested, horrific destructive force. When she accidentally loses her gun - loaded with the new bullet - she has to face the consequences.

Holy warriors battle demons during the Roaring Twenties.

Chrono is severely injured while trying to free Azmaria. Rosette is forced to release Chrono's true form as a powerful devil if they are to defeat Viscount Lerajie.

Aion, the devil who abducted Joshua, is abducting the Apostles to rain horrific terrors upon Earth. When Azmaria gets caught in the middle of a militia training sequence, Rosette is pushed to her limits to save her.

[DUB] Rosette, Chrono and Azmaria investigate a report of a corpse being smuggled by the mob. There they meet Satella the Jewel Witch, a bounty hunter with a big grudge against devils.