After the tragic loss of his wife battling the forces of darkness, Gabriel is persuaded to rejoin his former team of demon hunters traveling from relatively obscurity in America to the deep unknown regions of Europe. He is joined by his estranged best friend Michael who harbors a dark secret, the mystical Hannah whose visions predict the future, and a motley crew of demon slayers. After losing part of his team Gabriel must confront his tragic past and decide who really is friend or foe.

Casey is attacked at random on the street and enlists in a local dojo led by a charismatic and mysterious Sensei in an effort to learn how to defend himself. What he uncovers is a sinister world of fraternity, violence and hypermasculinity and a woman fighting for her place in it.