『深(shen)喉在(zai)線』介紹(shao):香(xiang)港灣(wan)仔(zi),電器行老(lao)(lao)板娘(鮑起(qi)靜飾(shi)(shi)(shi))丈夫早亡,她(ta)和(he)妹妹共同(tong)撫養兒子阿(a)(a)來(lai)(張(zhang)學友(you)(you)飾(shi)(shi)(shi))。但后者終日沉迷(mi)偵探小(xiao)說,41歲依(yi)然(ran)單(dan)身,還常會(hui)跟想象中(zhong)的亡父對話。在(zai)一(yi)場相(xiang)親宴上,阿(a)(a)來(lai)見到了(le)(le)潔具行售貨(huo)員愛(ai)(ai)(ai)蓮(lian)(湯唯(wei)飾(shi)(shi)(shi)),起(qi)初有點尷尬,后來(lai)在(zai)茶餐廳,兩人(ren)(ren)談笑(xiao)風生。不(bu)過,愛(ai)(ai)(ai)蓮(lian)一(yi)直(zhi)掛念(nian)獄(yu)中(zhong)的古(gu)惑仔(zi)男友(you)(you)阿(a)(a)旭(安志杰飾(shi)(shi)(shi)),所以(yi)對這門親事(shi)只(zhi)是敷衍。阿(a)(a)來(lai)同(tong)樣(yang)接到了(le)(le)前女(nv)友(you)(you)(張(zhang)可頤飾(shi)(shi)(shi))的邀(yao)請,出任(ren)男模(mo),兩人(ren)(ren)似乎重(zhong)新擦出了(le)(le)火花(hua)。雖然(ran)阿(a)(a)來(lai)和(he)愛(ai)(ai)(ai)蓮(lian)各懷心(xin)事(shi),但兩人(ren)(ren)卻在(zai)軒尼(ni)詩道(dao)再度重(zhong)逢。與(yu)此(ci)同(tong)時,老(lao)(lao)板娘卻因(yin)為(wei)報(bao)稅之事(shi)跟老(lao)(lao)相(xiang)好(李修賢飾(shi)(shi)(shi))鬧了(le)(le)別扭,而且,一(yi)直(zhi)蒙在(zai)鼓里的她(ta)還目睹了(le)(le)阿(a)(a)旭與(yu)愛(ai)(ai)(ai)蓮(lian)牽(qian)手逛街。經受不(bu)住打擊的她(ta)徹底崩潰(kui)、住進了(le)(le)醫(yi)院。此(ci)后,阿(a)(a)來(lai)跟前女(nv)友(you)(you),愛(ai)(ai)(ai)蓮(lian)跟阿(a)(a)旭的感情卻發生了(le)(le)變化……