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.
一名探员和一名连环杀手组成了看似不可思议的小分队，共同对抗全球拐卖儿童和性奴贩运网络。
故事围绕的士司机宇佐美浩二（木村拓哉 饰）展开，他每日奔波于都市间工作养家，却因女儿的学费、的士验车费、房屋租金等接踵而至的现实压力而身心俱疲。某日，浩二接到一项特别的委托——接载年迈的高野堇女士（倍赏千惠子 饰）从东京柴又前往神奈川叶山的养老院。“在离开东京之前，想先到几个想去的地方看看”，堇女士淡然请求。随着的士驶过日本的大街小巷，陌生的两人逐渐打开心扉，堇女士也徐徐道出自己跌宕的人生过往。这趟偶然的旅程，不仅触动了他们的心灵，也让二人在平凡的日子中，为彼此的人生留下难忘的美好印记。
