LAPD detective Mike Dooley and his dog, the German Shepherd Jerry Lee, have been successfully partnered for ten years, but Jerry’s advancing age has Dooley’s superiors suggesting retirement and they are forced to work with a younger K-9 team: female cop Sergeant Welles and her disciplined Doberman Zeus.

布莱德（威尔·弗里德尔 Will Friedle 饰）和自己迷人可爱的小女友布鲁克（玛丽·谢尔顿 Marley Shelton 饰）交往已经有一段时间了，两人一直都没有上过本垒。这一次，布莱德得到一个难能可贵的机会，要去布鲁克家里帮她补习功课，当晚布鲁克的父母都不在家，到那时候会发生什么事情小两口都心里有数。
激动人心的一刻终于到来了，可就在两人都干柴烈火之际，布莱德发现自己竟然忘记准备保险套了！没有安全措施的性行为是绝对不行的，因此，布莱德忍住了火烧火燎的欲望，离开了布鲁克家去买保险套。这本来应该是一件非常简单的事情，哪知道布莱德却就此踏上了一条“不归路”。

The extravagant cop Michael Dooley needs some help to fight a drug dealer who has tried to kill him. A "friend" gives him a dog named Jerry Lee (Officer Lewis), who has been trained to smell drugs. With his help, Dooley sets out to put his enemy behind the bars, but Jerry Lee has a personality of his own and works only when he wants to. On the other hand, the dog is quite good at destroying Dooley's car, house and sex-life...