Paris has always been purgatory for Zagan—a fallen angel masquerading as restaurateur Mr. Mathieu, trading hellfire for crème brûlée and mob ties for charity work. But when a revolution erupts in the Ninth Circle, led by the traitorous demon Byleth, Zagan's double life collides with divine chaos. The prize? A seal of the Abyss hidden on Earth—a relic that could crown Byleth king of Hell and doom humanity to eternal fire.

To stop the apocalypse (and salvage his reputation), Zagan assembles Paris's unholiest crew:

Their mission: Steal a map to Hell from the Louvre's cursed vaults, decode a 3,000-year-old ritual, and outrun Byleth's assassins. But when the ritual backfires, the team plunges into an underworld where Anubis rides shotgun, souls scream in frozen wastelands, and the ancient devourer Ammut hungers for angelic takeout.

Now, trapped between warring hells, Zagan must confront his celestial past, Germain must admit he likes teamwork, and Anastasia must decide:
Is saving the world worth working with the guy who once imprisoned her?

For fans of: Ocean's Eleven meets Good Omens, with a dash of Indiana Jones venturing through the hells.