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A martial arts master/detective investigates a series of murders and helps a deaf bathhouse attendant, Hisako.
Karate expert Katayama (Takeda) investigates the robbery of a bank in Hokkaido, where an apple seed left at the scene holds the answer to the robbers' whereabouts.
A cop, Katayama, gains the trust of a mother and daughter whose father, Nishina, is missing after being accused of killing a gang boss.
