Detective Nyla Harper continues her hunt for a serial arsonist, a pursuit that intensified after she responded to a report of an injured cyclist.
Officers John Nolan and Lucy Chen investigate what initially seems to be a domestic disturbance involving a missing person with "international ties". They eventually uncover a Russian FSB safe house , where they are targeted by Russian agents.
In this episode, the team at the Mid-Wilshire station deals with a series of high-stakes cases involving international espionage and domestic threats.