Denji is a spirited young man surviving on the ragged edge of a world overrun by lethal Devils, working tirelessly as a low-level hunter to clear a staggering family debt. His only companion is Pochita, a loyal chainsaw-dog, but his heart belongs to the enigmatic and beautiful Makima, a high-ranking officer who represents a level of grace and security far beyond his gritty reach. Just when a cruel betrayal leaves him on the brink of death, a fateful pact with his beloved pet transforms Denji into a powerful hybrid with the ability to tear through any obstacle. Now recruited into the elite ranks of Public Safety, he navigates a chaotic new life filled with eccentric allies and high-octane battles. Through the blood and fire, Denji remains fiercely driven by a surprisingly simple dream: to finally experience the warmth of a normal life and win the affection of the woman he admires.