To not burden their impoverished parents, two siblings decide to share a pair of shoes after the brother loses the sister's. While this turns out to be more difficult than they imagined but fate offers a chance in the form of a marathon.
The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This upset's the natural order of the police/criminal relationship and the police and the crooks join forces to catch the IPOs (Impersonating Police Officers), including an armored car robbery in which the police must help the gangs to set a trap.
三，是家的最小单位。血脉，是维系家庭的纽带。然而，三个素不相识的人却被命运交织在一起！ 善恶难辨的男人“驯鹿”，身怀六甲的女人李棋，哑巴男孩冰棍，三人假扮成一家人，游走于猎物与猎人之间，暗流已至，生死一瞬，一个关于家族式人口贩卖的黑暗链条逐渐浮出水面！
