Tommy becomes the first female police chief of Los Angeles.
Tommy works to keep her officers in line when one of their own turns up dead; Mayor Buddy Gray and Deputy Mayor Doug Dudik are concerned about what damaging information Arturo Lopez, a recently arrested acquaintance of Buddy's, may have on him.
A Hollywood producer is attacked during a party at his home by a woman who claims he tried to sexually assault her; Tommy prepares for the LAPD recertification process to demonstrate her fitness for her position.
Tommy must decide how to deploy the LAPD's resources when a climate change protest brings riots and a bomb threat at the same time as a mudslide shuts down a major freeway.
When a concert promoter who is accused of defrauding his customers takes hostages in a restaurant, Tommy sends Cooper and Diaz to manage the situation until she can arrive; two city council members refuse to sign Tommy's new budget proposal.
The mayor pressures Tommy to quickly solve a high-profile kidnapping that captures the attention of the citizens of Los Angeles.
Racial tension rises between the LAPD and the African American community, following the murder of a notable community activist.
Tommy and the LAPD race to find an online "swatter," a criminal who makes fake 911 calls; as Tommy deploys the department's full resources to the search, the perpetrator threatens to reveal private information about members of the police force.
Tommy tries to help a young woman who intentionally gets arrested to buy time for her political asylum request to be approved; a reporter friend of Blake's asks her about the prison murder of Mayor Gray's former campaign donor.
Tommy is accused of professional impropriety when her relationship with sports agent Kiley Mills intersects with the LAPD's arrest of a local sports phenom found possessing an illegal firearm.
Tommy launches an informal investigation into a possible LAPD and city government-related conspiracy just as she prepares to fight for her job in front of an ethics committee.