In the aftermath of Madorim's decline following the World War, a captivating tale unfolds as the maternal grandson, son of Lord Daesan's daughter, returns to the city. Despite initial feelings of abandonment, he emerges as a figure of unexpected beauty in a martial arts world marked by rugged aesthetics. Unveiling his true identity as the King of the Mu-myeon Mountain, a teenage expert who conquered the Dragon King of the Yellow River, the series promises a gripping narrative. Driven by his mother's last words and a determination to restore Madorim to its former glory, Jin Murip, this unparalleled teenage expert, arrives in Madorim.