Do Kyungsoo grew up in the most mundane way - oblivious to the world with only his music and art to occupy his already estranged teenage life. But when his parents disappears and his best friend dies saving his life on a crowded Seoul street, it was never the same again.
Kim Jongin was raised as a Shadowhunter - a race of Nephilim that vowed to protect the security and secrecy of the mundane world and of the Shadow World - but with a single mission: to find the greatest risk the Shadowhunters ever had in more than a decade. He was still on the verge of figuring it out - gouging the flesh mongers and drug dealers of downtown Seoul for information, and trying to solve out what the Downworlders are now claiming to be the downfall of the Nephilim, but at a fair cost.
In a world where the unusual dwells and the trickery of the ancient plays under the normalcy of the mundanes - Kyungsoo and Jongin bequests on their personal justices to find what they have been seeking, forming an unlikely ally, with the will to sacrifice the one true cost of their mission: their own lives.