Do Nam and his wife mourn heavily over the loss of their son, Sung Jae. Initially, Sung Jae is believed to have fallen from a building. However, judging by the absence of blood at the crime scene and how the top of his head hit the ground first, Beom and the crew suspects this to be a homicide, not an accidental fall.
한 고등학생의 죽음.
자살인가 타살인가.
사건은 점점 미궁 속으로 빠져드는데..