Old Gods are invading Earth, posessing humans and baring naked their most wicked emotions. The most powerful 'disciples' of these evil demons are called 'mages'. The story concentrates on two such people - Yoguruma Mugen (disciple of Yog-Sothoth) and Narukami Chikage (bound to Nyarlathotep). Their strained relationship and addition of another, seemingly human girl thrusts us into the world where no black or white exist. In this strange and brutal world fight to stay human even in the worst circumstances continues.

The author seems to use Lovecraft works lore.