『天(tian)(tian)(tian)下第一社區www日(ri)本在(zai)線』介(jie)紹:天(tian)(tian)(tian)光(guang)(guang)(郭晉(jin)安(an)飾(shi))是(shi)重(zhong)案(an)組的(de)(de)CID,為(wei)人(ren)剛直(zhi)不(bu)阿黑白分明。在(zai)追(zhui)查(cha)一宗連(lian)環殺人(ren)案(an)時,發現疑兇(xiong)竟是(shi)二十(shi)年(nian)前從父親(qin)手上(shang)逃脫的(de)(de)犯(fan)人(ren)。天(tian)(tian)(tian)光(guang)(guang)父親(qin)大(da)河(許紹雄飾(shi))是(shi)一名(ming)資質平(ping)庸的(de)(de)警(jing)察(cha),且粗心大(da)意不(bu)思上(shang)進,不(bu)僅讓罪犯(fan)逃走,更是(shi)死在(zai)妓女床上(shang),讓天(tian)(tian)(tian)光(guang)(guang)母子蒙受巨大(da)屈辱(ru)。以寫作(zuo)(zuo)實況小(xiao)說知名(ming)的(de)(de)作(zuo)(zuo)家高珊(陳慧珊飾(shi))此次亦追(zhui)蹤著天(tian)(tian)(tian)光(guang)(guang)手上(shang)的(de)(de)案(an)件,二人(ren)對案(an)件的(de)(de)不(bu)同(tong)理(li)解造成摩擦,紛紛競逐(zhu)真相。一日(ri),天(tian)(tian)(tian)光(guang)(guang)發現父親(qin)的(de)(de)舊電(dian)話(hua)神奇(qi)響起(qi),對方聲稱(cheng)自己(ji)是(shi)警(jing)察(cha),只是(shi)所說所講(jiang)都停留在(zai)八(ba)十(shi)年(nian)代。細(xi)問起(qi)才發現那竟是(shi)二十(shi)年(nian)前的(de)(de)父親(qin)大(da)河!二人(ren)合作(zuo)(zuo)無間,跨(kua)越(yue)兩個(ge)時空,共同(tong)追(zhui)查(cha)真兇(xiong)。