Sigrid and Suko are two girls from the impoverished and crime-infested streets of 24th century Earth. Sold into slavery to save their families from financial ruin, the girls are forced to live out their lives in service to the Kimura Corporation, a prestigious mercenary clan with a lineage stretching back long before the formation of the Federated Corporations.

Known only to Kimura, the two girls share a startling secret—a rare genetic structure not found in tens of millions of other girls.

But when their secret becomes known, Sigrid and Suko quickly find themselves at the center of a struggle for power. Now, hunted by men who would seek to control them, Sigrid and Suko are forced to fight for their own survival, and for the freedom of the girls from Alcyone.