Hideo Suzuki is a 35-year-old mangaka assistant, whose life seem to be stuck around his exhausting but low-paying job, unfulfilled dreams, strange hallucinations and unsatisfying relationships. He sees himself as a supporting character in his own life, has low self-esteem, resulting in frustration. One day, the world as Hideo knows it is shattered by the presence of a disease that turns people into homicidal maniacs, whose first instinct is to attack and devour the nearest human.

A moving, nostalgic portrait of the men behind the golden age of chanbara (sword-fighting dramas and films) that goes behind the scenes of the distinctive film genre for which Japan is most famous, with dominant performance by real-life kirare-yaku Seizo Fukumoto.