A humble shepherd stumbles upon a hidden cave and encounters a captive fairy who grants him an extraordinary opportunity. With her guidance he rescues a princess in peril, earning both a noble title and a vast domain to rule. Yet success demands that he transform the struggling territory into the realm's most prosperous within five years, or forfeit everything and return to his former life. As he takes his first steps as lord, dangers from opportunistic outsiders test his resolve and ingenuity.