1905年，香港中环。革命志士惨遭暗杀。知悉孙中山（张涵予 饰）即将抵港，清廷遂派遣将军阎孝国（胡军 饰）前来剿杀。他收买赌徒沈重阳(甄子丹 饰)作密探。适逢商人李玉堂(王学圻 饰)之子李重光(王柏杰饰)考学庆典，沈重阳见前妻月茹(范冰冰 饰)与幼女已成他人家眷，黯然离去。为护孙，《中国日报》社长陈少白（梁家辉 饰）邀戏班班主（任达华饰）出手，令其惨遭灭门，其女方红(李宇春 饰)侥幸生还。陈少白被擒，与阎孝国相见，师生决裂。独子游行好友被擒等变故，使李玉堂投身革命，引得探长史密夫(曾志伟 饰)查封报馆。其间，李玉堂帮车夫阿四(谢霆锋 饰)与恋人阿纯（周韵 饰）订婚。月茹夜会沈重阳，要他弃暗投明。打女方红、小贩王复明(巴特尔 饰)、乞丐刘郁白(黎明 饰)等人也先后加入护孙行列。一场惊心动魄的全城追杀由此展开…… 本片投资1.5亿人民币，史上首度以 1：1的比例，在上海重铸了1905年的香港中环。Halloween 1997 – the last night of high school for Corey, Jango and their skater gang, The Gromits. Childhood is over and adult life beckons. But for Corey, his past has some unfinished business. When he encounters Jonah, a former childhood friend but now victimised by Jango’s cruel streak, Corey takes pity on him and agrees to walk him home for old time’s sake. What starts off as a normal walk through empty suburban streets descends into something darker and magical, as trip through their memories and ghosts of the past, and Corey is surprised to discover how much he still has in common with his abandoned friend. And even the most buried truths will find a way of coming to life. Best unproduced screenplay award at the 2011 New York Gay and Lesbian Film Festival.“水妖”的传说在西方家喻户晓，据说那是一群住在海、河或森林中的美丽少女。一栋公寓的门卫克里夫兰（保罗·吉亚玛提 Paul Giamatti 饰）在夜里巡逻时，发现在游泳池里有一位少女，他救她出来，得知她名叫斯托丽（布莱丝·达拉斯·霍华德 Bryce Dallas Howard 饰），原来就是传说中的水妖，正在被怪兽追逐。为了帮助斯托丽回到原来的世界，克里夫兰找来许多大厦住户帮助，也慢慢爱上了这个与众不同的女孩，可惜时间紧迫，斯托丽在这个世界耽搁越久，越会惹来怪兽袭击，甚至开始威胁这个世界人们的生命……
