Synopsis：He takes the blame for his girlfriend and goes to prison, never knowing that the man she and a rich heir accidentally killed that night was actually his own older brother—and that she had already betrayed him, secretly involved with the heir. In the depths of despair, he inherits the legacy of a shadowy, top‑tier organization whose disciples include tycoons, nobles, high‑ranking officials, and crime lords, and he rises to become its new leader behind bars. Upon release, he learns his father died from grief, leaving only his widowed mother, younger sister, and sister‑in‑law. At his father’s funeral, the arrogant heir shows up with thugs, trying to humiliate his sister and sister‑in‑law; he steps in and brutally drives them away. Misunderstood by his own family, he still uses the organization’s hidden power to bring his father back from the brink of death. Later, he crashes a grand banquet of the heir’s powerful family, carrying his brother’s coffin, and crushes their elite fighters on the spot—avenging his brother and settling his own blood feud. Yet darker forces stand behind the heir’s clan. Soon, a vicious gang targets his family, extorting money and attempting to defile his sister‑in‑law, and he rescues them once again. He then helps his sister fight workplace bullying and resolves a string of bizarre medical crises involving a prestigious family head. Through these brutal trials, he wins back his family’s trust and fear—and truly ascends as the supreme master of the hidden organization.