17-year-old Wan-Deuk comes from a poor family and his grades in school are equally poor. He is a rebellious and troubled student, but he never loses in fights. Wan-Deuk then meets teacher Dong-Joo. At first, Dong-Joo and Wan-Deuk are like enemies, but Wan-Deuk grows to like him. Meanwhile, Dong-Joo cares for and seems to understand Wan-Deuk. Wan-Deuk takes up kick-boxing and through the sport grows as a person and also develops a dream.