Buldo Jeong was once a legend of the Korean underworld. But after a decade in prison, he walks free into a world that no longer plays by the old rules. The streets are run by a new wave of criminals known as the "MZ Gang" who are louder, flashier, and far more reckless. Though he intended to leave his past behind, he’s pushed to the edge when the youngbloods hurt those around him. Now, it’s time the city remembered who ruled these streets.