Um Ki-bong, a 40 year old man with the intellectual capacity of an 8 year old who loves his mother and running barefoot, decides to join the national marathon.Um Ki-bong, a 40 year old man with the intellectual capacity of an 8 year old who loves his mother and running barefoot, decides to join the national marathon.Um Ki-bong, a 40 year old man with the intellectual capacity of an 8 year old who loves his mother and running barefoot, decides to join the national marathon.