在银行同事们眼里,严谨(大鹏饰)是个十足的怪咖,凡事认真恪守原则,总是得罪行长,以至于连累大家奖金泡汤。一次偶然的机会,银行接到公安局举办的抢劫演习的任务,大家都想糊弄过去早点回家,严瑾却认认真真当起了“劫匪”……Yan is a bank employee who is strict and prudent at doing things. But he is really considered as a weirdo by colleagues. The bank is selected as the place that takes part in a bank robbery and annihilation maneuver, and Yan applies to act as the robber.