Jun Suh was grieving the death of his girlfriend Eun Suh, who had died of leukemia. As he drove home from her funeral, remembering their memories together, a truck accidentally hit his car. Due to being overcome with sadness over Eun Suh's death, Jun Suh did not have the will to avoid the collision and he died in the accident. Yoon Joon-suh and Yoon Eun-suh were adopted siblings who fell in love as adults after being separated due to a hospital mix-up at birth. Their love was cut short, however, when Eun Suh passed away from leukemia.