『大炕(kang)上被(bei)窩里交換』介紹:漫(man)(man)畫家刑智健(jian)(姜(jiang)皓文(wen) 飾)從(cong)商(shang)業大廈出來,即致電(dian)給愛(ai)兒天(tian)行(xing)(xing)(xing)(xing)(釋(shi)小龍 飾),天(tian)行(xing)(xing)(xing)(xing)卻(que)聽(ting)到電(dian)話另一頭(tou)的(de)(de)父親(qin)遭遇危險,焦急萬(wan)分而無能為力(li)。其(qi)實,這只是(shi)刑智健(jian)新(xin)(xin)作(zuo)《天(tian)行(xing)(xing)(xing)(xing)者(zhe)》的(de)(de)開場序幕,但現實竟與漫(man)(man)畫不謀而合,刑智健(jian)在(zai)他(ta)完成(cheng)(cheng)新(xin)(xin)作(zuo)《天(tian)行(xing)(xing)(xing)(xing)者(zhe)》當天(tian)離奇(qi)被(bei)殺(sha),而漫(man)(man)畫的(de)(de)其(qi)中幾(ji)頁亦被(bei)燒毀。具有漫(man)(man)畫天(tian)份的(de)(de)天(tian)行(xing)(xing)(xing)(xing),決(jue)定補(bu)上缺失的(de)(de)幾(ji)頁,幫父親(qin)完成(cheng)(cheng)這本漫(man)(man)畫遺作(zuo)。刑智健(jian)的(de)(de)女友嘉嘉(江芷妮 飾)為了找(zhao)出真兇,主(zhu)動協助天(tian)行(xing)(xing)(xing)(xing)。當天(tian)行(xing)(xing)(xing)(xing)完成(cheng)(cheng)天(tian)行(xing)(xing)(xing)(xing)者(zhe)時,他(ta)終于知(zhi)(zhi)道誰是(shi)兇手,到底誰是(shi)殺(sha)人兇手?天(tian)行(xing)(xing)(xing)(xing)又如(ru)何得知(zhi)(zhi)?