After many years, Anka Lomnická, a former countess and emigrant, arrives in Prague. By chance, she finds herself seated next to two characters from a crime story that gradually unfolds around Bubeník, a former guard of political prisoners. With her spontaneity, Anka meets old and new faces, one of whom is Věra, the granddaughter of the former administrator of the Lomnický castle, and her boyfriend, a young detective named Přemek. When Bubeník is found shot dead with a gun in his hand, Přemek is not convinced it was suicide and begins to uncover the past not only of the dead man, but also of his potential father-in-law and his friends, former political prisoners. Gradually, a whole series of people appear whom the ruthless Bubeník hurt in his lifetime...