In a world fractured by spatial rifts, humanity managed to survive by taming the demons that emerged from those alien worlds. Lucifer, son of Scarlet Demon, the stronges demon huntress, has always lived a cushy and spoiled life. Haunted by an accident that left him confused and deprived of his childhood memories, he knows the fractures may hold the key to recover what he lost. Determined to claim back what he lost, Lucifer embarks on a journey across hostile, demon infested worlds in hopes of recovering what he lost. The deeper Lucifer goes, the more question arise: Where did the demons come from? What caused the fracture? In a world of endless danger and mystery, Lucifer's journey is just beginning.