一个修锁匠，拎着给刑警队修理好的手拷，历经千辛万苦，千里追寻过失致人死亡而畏罪潜逃的儿子投案自首，不但拯救了儿子的生命，同时也用自己的一只肾，挽救了另外一条年轻的生命。

A locksmith, carrying the handcuffs he had repaired for the criminal police team, went through untold hardships and traveled thousands of miles to find his son who had fled for fear of crime for manslaughter. He not only saved his son's life, but also used one of his kidneys to save another young life.