A man is involved in a fatal car accident, and though he is blameless, his company transfers him to a remote branch in a small town. Before he leaves, he gives the man's widow a large sum of money that she uses to move back to her hometown.
A nerdy young college instructor named Shinji Kikyo returns home one day to find himself the target of a mad assassin. Surviving somewhat miraculously, he fends off other assassins and with the help of reporter Keiko Tsurumaki and car mechanic Bill Otomo, eventually discovering that a "population control" association is really an assassination squad led by Shogo Mizorogi, who has been training patients of a mental asylum to become killers.
Former playmates (Naito and Tamura), both long ago abandoned by their parents, recall their youth and fall in love.
When an only child is struck by a car and dies, the child's mother seeks vengeance against the driver in this thrilling drama. The car was driven by the wife of a company president who is having an affair. The woman's husband manages to buy silence about the incident, but the victim's mother discovers the identity of the driver. After she secures a job in the home of the company president and his philandering spouse, the woman plans to murder the couple's son when he reaches the age of her late son.
Tashiro coincidentally meets his best friend Sugimoto in a bar very close to the apartment in which Sugimoto’s wayward wife is found dead. Although Tashiro is not a suspect in the police investigation, he is racked with guilt and confesses to his wife, Masako. In an effort to further relieve his tortured sense of guilt, he then confesses to Sugimoto. Neither his wife nor his friend can believe that he could have been involved.
Charged with insubordination for punching a superior, Sergeant Kosugi is shipped to China in the last desperate days of the Second World War. His commander, Captain Sakuma, is vicious and dictatorial. Sakuma places Kosugi in charge of training for combat what once was the military band. Kosugi must somehow prepare his inept soldiers for the rigors of combat.