As the team works to stop a violent attack on the city, they're forced to confront the group responsible for the death of team member, Erika Rogers. Also, Hondo and Leroy disagree on how to handle a challenge to Darryl's fledgling business, and Luca tries to recruit new TEMS officer Nora Fowler for an annual inter-squad competition.

When four escaped prisoners take control of a courthouse with Hondo and Deacon inside but unarmed, the two race to save the lives of innocent civilians while trying to avoid detection themselves. Also, Street visits his mother, Karen in the hospital and faces a pivotal decision.