The film follows the procedures of an unfortunate man as he is arrested, indicted, and tried for groping, a criminal offense. Throughout, the audience is confronted with moral dilemmas, questions on the most basic, most fundamental principles of the justice system and court procedure. Of course, the basic tenet is "innocent until proved guilty," but how does a court truly guarantee such? How does a justice system work efficiently without error? How should the justice system correct itself when there is a mistake? And how should the defendant act when he is wrongly accused? These questions are relevant to any nation, not just Japan.
Despite all the considerations of a highly developed democratic system, the main character, Teppei, still finds himself in the most unfortunate situation of being indicted for a crime he did not commit. Japan has checks and balances different from the United States or other western nations. Most innocent people are freed in the Kensatsu (something similar to the prosecutor) and are never indicted. In a sense, there is a court involving investigation, before the actual court. That a defendant, before entering a court room, has already been found guilty in two separate investigations renders the court a place to merely decide what the punishment should be. This is the reality of 99.9% guilty rate (which includes those who plead guilty). Teppei finds himself in the unlucky situation where he actually gets indicted despite being innocent.
After seeing this movie, many people, especially non-Japanese, will get the wrong impression of the Japanese justice system, which is a lot more fair than this film gives credit to. Regardless, the film presents a very valuable and justified perspective of the way criminal cases are handled in Japan and forces us to contemplate the concept of courts regardless of nation.