Kaido is a professional pickpocket who works the Tokyo subway with his young foster-daughter, Rei: She lets herself be groped while Kaido relieves the groper of his wallet. More often than not they're observed by a middle-aged cop, who generally lets Kaido go free. Rei is unsettled when Kaido takes on a young street punk, Kazuki, as an apprentice -- with instructions to make Kaido stop drinking. Kazuki, however, would like to go into business with Rei.

在上下班乘客拥挤的车厢内，被誉为有名的ハコ师的扒手海藤（原田芳雄饰）注视着色狼的怀中。被痴汉骚扰的女人是和海藤同居的丽（真野切な）。海藤以花环为诱饵，瞄准了鸭子。那时，“呀，我会放过你的”初老刑警矢尾板（石桥莲司饰）用轻蔑的声音小声说。刑警的话尖锐地刺入了用报纸遮住颤抖指尖的海藤，“不赚钱的话就麻烦了吧”。不知从什么时候开始，刑警矢尾板像猎犬一样执着地追上了扒手海藤…但是，过去的宿敌海藤已经完全变成了AL中的扒手了……