Sixteen years ago, Howard Slater confronts the alliance of six countries as the Shadowlord to fulfill his duty of protecting the country, yet unfortunately loses his beloved wife in the schemes of his foes. Ever since then, he has retired from the battlefield to honor his promise to his wife to take care of their two daughters. For more than a decade, he earns a living as a laborer, not expecting an incident at his workplace to bring about his return due to a rising scheme.