In the Philippines, a boxing fighter named Marco tries to support himself and his ailing mother by competing in illegal contests. To obtain funds for his mother's operation, he travels to Korea to see his father, whom he has never met. However, as he begins his quest, a strange guy known as 'The Childe' begins to pursue him. Others join in the hunt of Marco, including a persistent heir to a conglomerate and a mysterious character he unexpectedly reunites with in Korea. These people each have their own motivations, and Marco is confronted with a terrible revelation.