An assassin seeking the ultimate heights of martial arts accidentally steps into the cultivation world over a trivial matter. When he learns that, like ordinary people, he has no spiritual roots, he loses hope and plans to live out his days in peace. But his deep, intense longing to reach the peak of martial arts makes him break his promise and resolutely cultivate through sheer force of will, setting out on a one-way path to challenge Heaven itself with the ultimate martial way of immortal cultivation.
