This heartwarming youth drama tells the story of Dae Gu, a young man who is unable to finish a marathon and has become distant from his friends due to the feeling of guilt from the tragic accident that led to the death of his brother. In a twist of fate he finds himself in need of money, forcing him in to competitive running. The drama follows Dae Gu's journey towards healing and competitive running, finding motivation and comfort from both past and new relationships.