Lee Dojun, a government desk worker in the rift management team, met with an accident and woke up in the world of Murim. There, he learned to fight and acquired a powerful skill—one that brought him back a day before his death each time he perished. After years of relentless growth, he became the strongest warrior, only to blink and return to his original world. Resuming his everyday life at work and home, the only difference now was that he had gained a daughter through his mysterious “Dad Contract.”