Leo, the legendary 'Ghost Supreme' and Five-Star Commander, returns to civilian life after a decade of war, hiding his elite status under a worn-out coat. His hope for a quiet life is shattered when he discovers his disabled sister, Mia, is being brutally persecuted by the corrupt Blackwood Family and a treacherous former friend. After effortlessly neutralizing a supermarket robbery and rescuing his sister from ruthless thugs, Leo finds himself surrounded by corrupt police officers serving the city's criminal elite. Realizing that the city is rotting from within, the hidden legend decides to stop holding back. He begins a ruthless campaign to dismantle the criminal umbrella and reclaim his family's honor.
