"Versailles of the Dead" is a historical fantasy manga set in an alternate version of 18th-century France, blending elements of horror, political intrigue, and supernatural phenomena. The narrative begins with the French Revolution, but the historical trajectory is disrupted by a sudden outbreak of a mysterious plague that reanimates the dead. The royal family, including King Louis XVI and Queen Marie Antoinette, are among the first to fall victim to the undead uprising, plunging the nation into chaos.

The story centers on Juliette, the fictional younger sister of Marie Antoinette, who survives the initial attack on Versailles. Juliette is a strong-willed and resourceful character, determined to uncover the truth behind the plague and protect those she cares about. Accompanied by a diverse group of allies, including a loyal maid, a skilled swordsman, and a mysterious alchemist, Juliette navigates a world overrun by zombies while grappling with the political machinations of surviving nobles and revolutionaries.

As the group travels across France, they encounter various factions vying for power in the wake of the monarchy's collapse. The revolutionaries, led by figures like Robespierre, seek to exploit the chaos to establish a new order, while remnants of the aristocracy attempt to reclaim their lost influence. The plague itself becomes a central mystery, with hints of alchemical experimentation and supernatural forces at play. Juliette's journey is not only a fight for survival but also a quest to understand the origins of the undead scourge and her own connection to it.

The manga explores themes of loyalty, betrayal, and the fragility of societal structures, set against a backdrop of gothic horror and historical reimagining. The characters are complex, with their motivations often blurred by the dire circumstances they face. The narrative maintains a tense atmosphere, balancing moments of action and suspense with deeper explorations of the characters' relationships and the moral dilemmas posed by the collapse of civilization. "Versailles of the Dead" offers a unique blend of historical drama and supernatural horror, creating a compelling and immersive story.