Su Ming was once the world’s number-one assassin, who saved hundreds of millions of his fellow humans and was honored as one of the Ten Great Powerhouses of the Dragon Nation.
However, he was betrayed by his lover and brother, dying with hatred and being buried within an S-class dungeon known as the Death Cavern.

Unexpectedly, he is reborn returning to his high-school days, on the very day of the awakening ceremony—and this time, he awakens with a Mythical-grade talent!