In a world where your heart is destined to belong to someone else, Sky Casino Manager, Sigma, refuses to believe he has some predetermined love. While a reformed criminal, Osamu Dazai, searches endlessly for something to make his life meaningful, he is captured by the military police and put into a secure prison. They end up crossing paths as Sigma assists an acquaintance of his to break his colleague out of prison. Neither of these wounded souls knows that somewhere in the dark, a malicious evil lurks, seeking to tear their bond away from them, permanently.