Yuhyeon, the newly appointed CEO of Hansung, a thriving electronics corporation tainted by a toxic workplace atmosphere, finds himself devoid of celebratory companions who truly matter to him. Following a night of introspective indulgence in alcohol and contemplation about altering history, he awakens the next day, inexplicably transported two decades back to the genesis of his professional journey. Equipped with the wisdom and discernment that propelled him to the pinnacle of leadership, Yuhyeon embarks on a quest to mend shattered connections and combat the proponents of Hansung's ruthless ethos. Yet, the repercussions of reshaping the past on his future remain a tantalizing enigma...