
Daniel "Hondo" Harrelson, a Los Angeles S.W.A.T. lieutenant, is assigned to lead a highly skilled unit in the community where he grew up. Torn between loyalty to the streets, where the cops are sometimes the enemy, and allegiance to his brothers in blue, he strategically straddles the two worlds. Hondo encourages his team to rely on communication and respect over force and aggression, but when a crisis erupts, these unflinching men and women are prepared to put their tactical training to the test.

20-Squad contends with a hostage crisis; Hondo receives a family visit.

The squad races to find a missing child who was abducted from her front yard; Hicks is faced with a difficult decision concerning Gamble.

When Hondo's cousin goes AWOL from his Marine base during basic training, Hondo, Deacon and Daniel Sr. take a road trip to get the kid in line; Alfaro plots to work outside the law when he discovers that his mother's abusive ex is back in her life.

When an auto carrier truck gets hijacked by a high-speed crew, Hondo encounters a ghost from his past; Gamble is thrust into a personal crisis when her brother becomes tangled in the investigation.