Officer John Cooper returns to duty after recovering from back surgery and meets his new partner, Officer Jessica Tang, a tough and disciplined cop with her own set of baggage from working the streets. Lydia, whose new partner is Ruben Robinson, can't seem to escape helping a former CI who won't stay in safety. Ben, Sammy and Dewey chase an armed man into an elementary school, while Ben bumps heads with an intense street cop whose cynical attitude is affecting their work. 　　译文(2): 约翰 · 库珀警官在背部手术恢复后重返岗位，并与他的新搭档杰西卡 · 唐警官见面。杰西卡 · 唐警官是一名坚强、纪律严明的警察，她在街头工作时也有自己的包袱。莉迪亚的新搭档是鲁本 · 罗宾逊她似乎无法逃避帮助一个不愿安全生活的前线人。本，萨米和杜威追逐一名武装人员进入一所小学，而本与一名愤世嫉俗的街头警察碰头，这名警察的愤世嫉俗态度影响了他们的工作。