约什（本·斯蒂勒 饰）与柯妮丽娅（娜奥米·沃茨 饰）陷入定式且停滞不前的生活，在遇见年轻情侣杰米（亚当·德利弗 饰）与达比（阿曼达·塞弗里德饰）之后，他们的生活发生了天翻地覆的改变。四人成为朋友，约什和柯妮丽娅重新寻回激情，但四人之间仍然横亘着不可避免的年龄差距。
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.
