After mourning for Slayne's death, Grey Valentine commits suicide hoping to reunite with his beloved best-friend in the depths of Hell. However, through an ironic twist of fate Grey doesn't find himself in Hell but instead... in HEAVEN?
Now a newly awakened demon, Slayne discovers his lust for more power and is slowly losing his mind. Valentine is on the mission to stop Slayne. Will Valentine be able to save Slayne in time? Does the mercenary even WANT to be saved?