The Boxes of Death (1955)

A communist, No Neun-geol, tries to upset the public sentiment. Noticing his intention, a village youth, Choe Mu-ryong, steals into the communists' hideout and succeeds in fitting a time bomb with a box of death. However, before he escapes from their hideout, he gets caught up and after undergoing several dangerous moments, he manages to run away. Shortly after that, the bomb explodes, killing all the communists.