In 1980s South Korea, a former cop, now in destitution, is placed in a rehabilitation center, where, by chance, he finds the Communist guerilla who had eluded his capture more than 30 years ago.
The newly installed radio transmitter using ultra sonic wavelengths has caused all corpses in the local cemeteries to rise up. The resurrected go on a rampage in a endless search for blood.
Ko Lin kills the brother of Hung Lau, an outlaw. Hung Lau, in turn, kills Ko Lin's entire family, and goes into hiding to learn and master the "natural fist", the most deadly form of kung-fu. The final battle between the two sworn enemies is a dynamic duel to the death.
