In the aftermath of his decision to speak out in the press, Hondo retreats to a quiet town in Mexico to reassess his life and professional future, only to find himself reluctantly drawn into one local family's fight for justice.
Still in Mexico, Hondo teams up with a local cop for a dangerous rescue mission, only to find himself with a target on his back. Also, back in Los Angeles, Hicks considers disbanding the team for good.
When a robbery crew holds up the iconic downtown Los Angeles library, the team discovers that stolen architectural drawings could lead to a major threat against the city. Also, the squad is surprised by the arrival of a new leader, longtime LAPD veteran and former S.W.A.T. member Rodrigo Sanchez.
As the team races to stop a unhappy band of armed robbers, the search is complicated by civilians using a public safety app that encourages vigilantism. Also, Street receives difficult news that alters his future.