《《跑男3》》片头是导演兼主演艾伯特·布鲁克斯坐在一个漂亮的办公室介绍道《真实人生》和预告片都是3D的(一个善意的谎言)需要佩戴3D眼镜观看或者向影院借红蓝玻璃纸(也都不存在)并且越说越激动用手夸张地指着摄像头说:“电影可能拍的就是你”甚至搞笑地把喝完的水泼向摄像机来“解渴”最后看似没有关系乒乓球冠军布朗出现了艾伯特邀请他留下来自己则举起玻璃纸看他打球然后情不自禁地说道:“天哪看起来你就像是真实存在一样”Bunty loves his girlfriend Tanya but runs a mile whenever she mentions marriage. His phobia with matrimony stems from his parents Kishen and Mala's acrimonious marriage. But now Bunty is in a fix. Tanya's grandfather, Professor Anthony Gonsalves, as given him an ultimatum - get married to Tanya or stop seeing her. Bunty knows that unless he does something fast, his dreams of living happily ever after with Tanya will bite the dust.湾仔区巡警陈俊杰(陈奕迅)因为七年来每日所做都是极有规律毫无变化的工作渐渐对警察一职失去激情上面派来小师妹廖得男(容祖儿)与他一起巡逻时眼见对方满腔热情事事认真他冷眼旁观之余会不时地冷嘲热讽遇到疯子王成(吴镇宇)时陈俊杰也只当他为精神病人指给廖得男看19岁的天真少女Nicole和Diet在一宗巴士乘客露械案中认识陈俊杰后开始对其崇拜陈俊杰也从两人身上感受到温暖不久湾仔区出现一名残暴强奸犯不少单身女性都被其奸杀Diet也没能幸免此事促使陈俊杰从麻木中惊醒他开始发疯似地缉拿凶犯...