In the smoky skies of an alternate steampunk Europe, Captain Isadora Finch, fearless and irreverent, soars aboard her airship, the Valiant Sparrow. But her world spirals into chaos when she unwittingly steals a device capable of disabling steam-powered machinery across England. Known as the "steam disruptor," the device could cripple industrial hubs, paralyze defenses, and plunge the nation into turmoil if it falls into the wrong hands.

Navigating betrayal, sabotage, and the shadowy intentions of the mysterious Brass League, Isadora must rely on her wits and her mismatched crew—including a genius cabin boy with a knack for mischief and a smuggler with a penchant for trouble. With clandestine help from her antagonistic ally, Inspector Algernon Grieves, she sets out to protect the device while staying one step ahead of those who would exploit it.

Packed with action, intrigue, and razor-sharp humor, Captain Finch and the Steam Disruptor is a tale of daring exploits, unlikely friendships, and high-flying adventure in a world where the industrial revolution runs on steam and courage.