The fantasy manga is set in a trading city named Kunlong, and centers on Marco, a minor member in the city's ruling crime syndicate, the Serpent Ring. Marco lives a normal, boring life, never dipping into notoriety. But his life takes a turn for the unique when he meets Atwight, a girl who seemingly fell from the sky. Atwight's arrival begins to upset the balance of not only Marco's life, but the regularity of life in Kunlong.

(Source ANN)