
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.

Hondo and Hicks desperately search for Powell, who's gone missing in Mexico City along with a thermobaric bomb capable of killing thousands; Deacon's pride gets injured in a boxing match with Rocker.

The squad leaps into action when Yakuza assassins descend on L.A., targeting a number of mysterious Japanese ex-pats; Nichelle finds her job on the line when a colleague accuses her of taking bribes.

A Chilean arms dealer kidnaps a woman and her daughter; crossing paths with his brother, Tan is forced to come clean to his family about his divorce from Bonnie; Hondo discovers that Hicks has received a job offer that could lure him away.

Street discovers a biker club has stolen a cache of armor-piercing bullets, and they intend to pull off a daring heist; Hondo struggles with changes at work; Nichelle finds herself at odds with a former colleague.