Dae-Goo (Baek Sung-Hyun) and his older brother enjoyed running. His older brother was mentally challenged and his father always told Dae-Goo to take care of his older brother. Dae-Goo had two friends Ji-Man (Yoo Yeon-Seok) and Haeng-Joo (Park Min-Young). One day, his older brother died in an accident. His father then told Dae-Goo to stop running.
Now, Dae-Goo is preparing for a run. He is waiting for the starting signal of the marathon. His father goes on the field and tries to drag him away.
