Junko (Sho Aikawa) is a low-level yakuza in the service of Yoshikawa (Toru Minegishi), despite the misgivings of his uncle (Jo Shishido). He lives off of the money earned by his girlfriend and is more interested in trying to look cool than anything else. He meets Yumeko (Chikako Aoyama), an innocent but dangerous narcoleptic runaway, after she steals his car, and she soon moves in with him. Following the assassination of a high-ranking member by the Kazama Family, Junko is called on to be the lookout while the family gets revenge. However, the other men quickly "zoom", or escape from their duty, leaving the task to Junko. Will he take out Kazama, or will he zoom?

刚从少年院出来的水田顺公，在暴力团组长吉川手下工作，还是个初出茅庐的小跟班。他约了一个刚认识的奇怪少女梦子一起兜风，没想到在途中目击到杀手被团员射杀，而这个杀手其实是吉川的兄弟、杀害金田的凶手，但雇佣这名杀手的是风间组，这是吉川的宿敌。吉川决定进行报复，便将顺公指名为要送入风间组的炮弹枪的目标，但顺公却始终无法得手。

少年院を出て間もない水田順公は、暴力団の組長・吉川のもとで働く、まだ駆け出しのチンピラ。知り合ったばかりの不思議な少女、夢子とドライブに出掛けた先で、殺し屋が暴力団員に射殺されるのを目撃する。その殺し屋は吉川の兄弟分、金田を暗殺した男だったが、男を雇ったのは吉川の宿敵である風間組だと判明する。報復を決めた吉川は、風間組に送り込む鉄砲玉のひとりに順公を指名するが、順公はなかなかふんぎりがつかなかった。