Born to a paternal grandfather having been a South Korean soldier and a maternal grandfather a North Korean soldier in the Korean War, I live in the south of the Korean Peninsula which is still strictly divided. One warm spring day, I witnessed the death of my maternal grandfather. His death continues to pose a painful question to me even now as an adult. 'Why did my grandfather make such choice that day?' I start to chase his days of life in order to answer the question. I take a journey along the ground that he had walked on, to understand the grandfather's death and the history of tragedy with a heavy heart.