The Black God's Drums

In the world of the novella, the Haitian Slave Revolt freed Haiti as well as many Caribbean nations, now called the Free Isles. The Haitians used a powerful weapon called the Black God's Drums to defeat the French fleet. Also known as Shango's Thunder, the Drums create powerful storms. Their collateral damage is so high that they have only been used once. The Confederate States of America have fought to a draw with the Union, and New Orleans is now neutral territory. Additionally, the Confederacy uses drapeto, a psychoactive gas, to control their enslaved population.

Creeper is a street urchin born in New Orleans during a storm, giving her a special connection to Oya, the orisha of storms. When Creeper is thirteen, she overhears Confederate soldiers discussing a Haitian scientist and the Black God’s Drums. Creeper decides to sell this information to Captain Ann-Marie St. Augustine of the airship Midnight Robber in exchange for becoming a member of the crew. Ann-Marie has a connection to the goddess Oshun, Oya’s sister.

Oya sends Creeper a vision of a skeleton. A man in a skeletal Mardi Gras mask kidnaps the Haitian scientist, Dr. Duvall, before Ann-Marie and Creeper reach him. Creeper and Ann-Marie meet with Sisters Agnes and Eunice, nuns who provide Creeper with information about the city. They learn that Duvall has been kidnapped by Johnny Boys, a splinter group of Confederate soldiers. The nuns give Ann-Marie and Creeper a flask of drapeto.

Creeper, Ann-Marie, and the crew of Midnight Robber journey into Swamp Ponchartrain, where they find that Duvall and his daughter are being held captive. Duvall is being forced to work for the Johnny Boys under threat that they will sell his daughter into the Confederacy. Using the drapeto and Oya’s powers, Creeper defeats the man in the skeletal mask. The masked man fires Shango’s Thunder before dying. Oya and Ochun work to stop the resulting storm from destroying New Orleans and to protect the crew from the rising waters. Afterwards, Ann-Marie returns to Haiti with Duvall, and Creeper agrees to stay in New Orleans to further her education.

Writing for Strange Horizons, Bodhisattva Chattopadhyay stated that New Orleans is a setting "well-suited" to exploring the novella's themes. The novella explores historical trauma, including the Atlantic slave trade and the notion of "legacy". Chattopadhyay writes that the Civil War did not end in the world of the novel, which parallels the increased use of the Confederate flag during the presidency of Donald Trump.^[1]

Additionally, the novel's use of "drapeto gas" to control enslaved people evokes both a steampunk aesthetic as well as the theorized illness of drapetomania, invented as an explanation of why enslaved African-Americans fled from their captivity. The drapeto gas also conjures images of "medical experimentation on black bodies" as well as "Jews in the Nazi era". At the end of the novel, Ann-Marie and Creeper subvert these tropes by turning the drapeto gas against their enemies.^[1]