In this story of intrigue and romance; Portland detective, Kyle Morrell and a modern day samurai geisha, Aiko, take on the city's corrupt underworld.

Aiko and Kyle's chance encounter occurs when the detective tries to save the geisha from her injuries during a shoot-out with Masato, Aiko's master.

Together and separately, Aiko and Kyle must overcome personal demons as they make their way through the gauntlet of the Shanghai Tunnels and escape from a place once known as The Unheavenly City.

What Kyle believed about his himself and his family changed when he became caught up in the complicated world of mysterious swords, human trafficking and family betrayal.

Aiko, trained in the strict obedience of the martial arts as well as in the art of pleasure; must now find a way to live a life of her own. In the process, she becomes a guardian to a young girl who has yet to find her place in this world...code name...Red Butterfly.