It is 1887, and Alma Rosales is on the hunt for stolen opium. Trained in espionage by the Pinkerton Detective Agency --- but dismissed for bad behavior and a penchant for going undercover as a man --- Alma now works for Delphine Beaumond, the seductive mastermind of a West Coast smuggling ring. When product goes missing at their Washington Territory outpost, Alma is tasked with tracking the thief and recovering the drugs. She’s enjoying her dangerous game of shifting identities and double crosses as she fights for a promotion and an invitation back into Delphine’s bed. But it’s getting harder and harder to keep her cover stories straight and to know whom to trust.