Leaving his wife in Osaka, Honda leads a double life in Tokyo – after spending the day as an elite businessman, he flirts around in the evenings. He even rents a secret apartment where he keeps record of his girl hunts in his diary, the ‘Hunter’s Diary’. One day, he finds an article in the newspaper – a murder of a young woman in his diary. A few days later, another woman from his diary is murdered. He soon finds himself in a labyrinth of fear, as women named in his diary are killed one after another...
A battle for a large sum of money unfolds on the docks near a steel mill in a foggy atmosphere. Manzo, an engineer on the verge of retirement, witnesses two men shooting each other and collapsing on the quay while his assistant Shinsuke is away.
According to Donal Richie in The Japanese Film it was meant to do for sumo wrestling what Kurosawa had done for judo in Sanshiro sugata, and that Kurosawa wrote it for Daiei after "drinking up all [his] money" (from his autobiography).