Faced with ruthless foes with a violent thirst, two young boxers band together — risking life and limb to bring justice and protect their loved ones.
After a thrilling boxing match, Kim Gun-woo befriends Hong Woo-jin. Kim Myeong-gil's business ambitions come into focus, with dangerous tactics at play.
Gun-woo meets with Choi Tae-ho to remedy his mother's debt. Myeong-gil endures a humiliating meeting with Hong Min-beom and grows revengeful.
Gun-woo and Woo-jin figure out how to take down the scam ring. Myeong-gil gains the upper hand on Min-beom.
After the group faces a close call, President Choi plans his own operation. But as their plans fall into place, the enemies stand in their way.
After narrowly escaping a threat, the group trains for what's coming — and President Choi and his men look to extract valuable information.
The group celebrates as they get ready for their next move. More exposed than ever before, Myeong-gil goes after President Choi and his guards.
After an unthinkable setback, Gun-woo and Woo-jin resolve to come back with a vengeance — later partnering with an unlikely figure.
Galvanized by their duty to their loved ones, Gun-woo and Woo-jin tread forward to take down Myeong-gil — once and for all.
Going up against a formidable champion, Kim Gun-woo prepares for an upcoming fight. But in the shadows, the brutal Im Baek-jeong hunts him.
Gun-woo puts his mother's safety first. Hong Woo-jin turns to an old friend for help. But Baek-jeong's men soon catch up after tailing their every move.
Gun-woo discovers just how sophisticated IKFC is — and that he could potentially get pulled in. Meanwhile, Baek-jeong finds another target to lure him.
Tension rises after Baek-jeong puts Gun-woo's close ally at risk. As Baek-jeong's group comes to light, Min Gang-yong plans a mission to hunt him down.
Backed into a corner, Gun-woo decides to face Baek-jeong himself. But things take a turn — further fueling Baek-jeong's rage to new heights.
Gun-woo and Woo-jin zero in on what makes Baek-jeong vulnerable. Gang-yong makes a final move to capture Baek-jeong, but the task is full of danger.
Hong Min-beom devises a plan to end the madness for good — pitting Gun-woo and Woo-jin in a final fight against formidable foes for lasting peace.
