In 11th-century Japan, Sugawara Akitada's ailing wife is expecting a child, and when he loses his job and tries to confront the nobleman who is responsible for his dismissal, he ends up suspected of his murder. With no income and a growing family to support, Akitada desperately plunges into the investigation of this crime, aided by his faithful servant Tora, inadvertently placing not only his own life, but also the lives of his wife and child, in grave danger.