A Vietnam War veteran, Ki-gwang is an old bus driver. Suffering from the aftereffect of the war, he no longer stays in contact with his family. One day, he gets a sudden call that his son has committed suicide and meets his teen-aged granddaughter Bo-ram at the funeral. Seeing Bo-ram left all alone, he feels like taking care of someone for the first time. On searching for the reason of his son’s suicide, he finds out that some friends of his son have been abusing Bo-ram as their need. Police is reluctant for his constant request for help, and the offenders show no regret. When even Bo-ram tries to end her life, enraged Ki-gwang prepares the vengeance to the world on his old way…