When Emperor Rustanard of the Rusclan Empire enlists the help of the Otherworldly Savior from a distant realm to fulfill a prophecy, he is surprised to discover that the chosen one is a mere 16-year-old named Sihan Seong. Despite being initially rejected by the emperor, Sihan returns with a band of six valiant warriors to challenge the tyrannical ruler and liberate the Rusclan people. Just as victory seems imminent, Sihan faces betrayal from his comrades, leading to his abrupt return to his original world. A decade later, Sihan reemerges on the Terranor Continent, where he forms an unexpected partnership with Alita, the daughter of Emperor Rustanard, in a quest fraught with intrigue and redemption.