As the team searches for the culprit behind the Koreatown crime surge, McKenna is triggered by memories from her experience in Iraq. Syd discovers a tape of Jen with an unexpected client.

Amidst the chaos of investigating a case that overlaps with Nico's new hustle, McKenna starts family therapy, and Syd delivers bad news to Jen's family.

When Emma goes missing, Syd will stop at nothing to bring her back home to her family. An undercover McKenna attends a veteran's retreat that could be sourcing the highly skilled Koreatown criminals.

Syd and Baines are threatened by an internal affairs investigation regarding Beverly Gamble's death; McKenna and Walker interrogate Duke Ingram which leads the team to an unexpected arms dealer.

As Patrick waits for the election results, the team works tirelessly to find Malcolm Ward, a killer at large. Syd offers to tell internal affairs the truth about what happened in the scrap yard.

McKenna grieves the death of a loved one with Syd by her side. The LAPD detectives work as a united force to put an end to Lustrum Holdings and restore peace in Koreatown.