Once feared as the ruthless underworld don Nie Lee, Lucifer Silver Knight is reborn in the magical world of Trevor. This realm, home to dragons, devils, and mythical creatures, has forgotten the true dangers sealed away long ago. The god-dragon Zodiac once imprisoned the devils, including the powerful Lucifer, but now, humanity's greed and complacency threaten to undo that peace.

As Lucifer grows, he uncovers his destiny to protect the Five Great Kingdoms from the rising devils. Armed with his past life's wisdom and newfound powers, he must prepare for the impending battle to save this world from darkness.