A mysterious aurora engulfs the planet, mutating nearly 70% of all creatures—from humans to insects—into ferocious man-eating monsters. Gu Qijue possesses a unique edge: he was reborn two hours before the apocalyptic event. His first action is to venture into the mountain behind his school and capture a Black Mamba. After consuming the serpent, Gu Qijue awaits the aurora's descent, ready to undergo a combined evolution with the Black Mamba and transform into an unstoppable black dragon.