After a mysterious accident at a research camp on the Isle of Gran Manan, a CEO hires a team of blue-collar mercenaries to extract his daughter, a scientist working at the camp. Upon arrival, the team soon learns that not only is the island surrounded by a wormhole that causes time to reset every three days, but it's also crawling with hideous monsters. As they learn more about the nature of time, space, and the creatures on the island, they quickly realize that death may be the easiest way to escape the island.
吴亚秋(吴耀汉 饰)和贝多芬(岑建勋 饰)是香港警署反黑组一对活宝警员,这对师兄弟吊儿郎当,不务正业,入行十多年还是初级警员。好在他们生性乐观,加上陈sir(陈欣建 饰)对二人多有照顾,因此他们倒也十分享受这样的逍遥生活。所谓傻人有傻福,亚秋阴差阳错还得到陈sir的女秘书安娜﹝叶德娴 饰﹞的垂青。他们受命调查从事不法勾当而暴富的商人夏正毅(陈龙 饰),只是对方分外狡猾,不露出任何马脚。夏的情妇掌握他各种犯罪勾当的账本,并以此作要挟。夏命手下杀害情妇,而亚秋和贝多芬则成为了尸体的最先发现者。夏正毅为了得到账本,于是向情妇的表妹伸出毒手,亚秋和贝多芬能否将罪犯绳之于法?