A pair of stumbling childhood sweethearts, a pair of close colleagues, in this gloomy society, one after another, experienced the joys and sorrows, and finally achieved success. The unknown body of a man who died in the suburbs, the cry of a child in the sewer... The cases that follow one after another, the confusing truths one after another, we have no way of knowing what exactly reflects the misfortune of the deceased or the cruelty of human nature...