Episode 8 of *One: High School Heroes* erupts into chaos as a fierce showdown unfolds between Geol-jae and Ki-soo. In a display of raw power, Ki-soo emerges victorious, leaving Geol-jae battered and bruised in a hospital bed. When Yoon-ki pays him a visit, Geol-jae imparts a solemn warning: "Violence begets violence. Stop the cycle before it consumes you." Meanwhile, Da-bin orchestrates a daring escape, whisking Ui-Gyeom away from Seok-tae's clutches. The pair seeks temporary refuge in a hotel as Da-bin scours the city for a permanent haven.
Do Yoon-ki and Ui-Gyeom emerge triumphant over the formidable Choi Ki-soo? The odds seem stacked against them. Ki-soo's reign of dominance begins with Geol-jae's hospitalisation, setting a ominous tone. When Yoon-ki bravely steps forward to reclaim Ui-Gyeom's Walkman, Ki-soo once again asserts his supremacy, yet surprisingly allows Yoon-ki to depart with the cherished device. Yoon-ki, battered but determined, presents the repaired Walkman to Ui-Gyeom over the phone. Witnessing Yoon-ki's battered state, Ui-Gyeom vows retribution. The next morning, he ambushes Ki-soo outside the school gates. Initially, Ki-soo maintains control, but a surge of pent-up frustration—directed at himself, his father, and his brother—clouds his judgment. Seizing the moment, Ui-Gyeom delivers a crushing blow, leaving Ki-soo reeling and vomiting blood. Undeterred by his father's pleas and Ki-soo's feeble attempts to fight back, Ui-Gyeom ruthlessly breaks Ki-soo's arm, marking a brutal end to their feud.
What fate befalls Da-bin in this turbulent episode? Driven by an unwavering resolve to shield Ui-Gyeom from Seok-tae and his father's clutches, Da-bin faces a daunting challenge. As she flees with Ui-Gyeom, Seok-tae and his father, accompanied by social services officers and a psychiatrist, confront them at the hotel. Accusing Da-bin of mental instability and unfitness to raise a child, they attempt to have her committed to a mental institution. Undeterred, Da-bin contacts her lawyer, instructing him to prepare a defense based on Habeas Corpus, challenging the unlawful detention. On their journey home, Ui-Gyeom's grandfather, a towering figure in the medical community, boasts of his impending victory. Yet, as the episode concludes, Da-bin defies the odds, escorting Ui-Gyeom to the bus stop where he boards a vehicle bound for his new school. With a steely gaze, she vows, "I'll wait for you."
What lies ahead for Ui-Gyeom and Yoon-ki? Following their harrowing encounter with Ki-soo, Ui-Gyeom enrolls at Moomyung High School, a notorious institution where teachers and students engage in open combat, and only the top ten performers earn transfer to a conventional school. Inside the bus, fate reunites him with Yoon-ki, who has chosen to stand by his side in this new chapter. As they approach the school gates, the teacher in charge unleashes a flurry of blows, urging the students to disembark swiftly—a harbinger of the relentless battles that await within Moomyung's walls.
