杰克(安迪·萨姆伯格 Andy Samberg 饰)是一位精明强干的警探,被他所捕获的罪犯能排上好长一列,然而,在其他同事,包括他那新上任的上司雷(安德鲁·布劳尔 Andre Braugher 饰)眼中,一心追求“成绩”的他似乎有那么一些“不守规矩”。艾米(Melissa Gallo 饰)出生于警察世家,作为家中唯一一个穿上警服的女孩,她明白自己肩上背负着怎样的重担,有些时候,这重担压得她都有些喘不过气了。 泰瑞(泰瑞·克鲁斯 Terry Crews 饰)性格懦弱,至今还沉浸在妻子带着一对双胞胎女儿离他而去的痛苦之中。而查尔斯(乔·洛·特鲁格里奥 Joe Lo Truglio 饰)则陷入了对美女探员洛萨(斯蒂芬妮·比翠丝 Stephanie Beatriz 饰)那注定不会有结果的恋情之中无法自拔。Captain Ray Holt (Andre Braugher) takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta (Andy Samberg), a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago (Melissa Fumero), Jake's over achieving and competitive partner; Detective Rosa Diaz (Stephanie Beatriz), a tough and kept to herself coworker; Detective Charles Boyle (Joe Lo Truglio), Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords (Terry Crews), was recently taken off the field after the birth of his twin girls; and Gina Linetti (Chelsea Peretti), the precinct's sarcastic administrator.