Cha U Sol, once a victim of school bullying, was sent to prison for stabbing the eye of his bully. It is there that he learned to fight. Months after he is released, he tries to live his life diligently, along with 3 friends who also share a criminal record.Hyun U Yong, a gang boss and great fighter, will stop at nothing to get Cha U Sol to participate in the illegal fighting ring that he runs. To survive and take Hyun U Yong down, Cha U Sol, with the help of his friends, goes up against him.(Source: MyDramaList)~~ Adapted from the webtoon “Shark” (샤크) written by Woon (운) and illustrated by Kim Woo Sub (김우섭).