
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.

When a female robbery crew honey traps and kills several rich VIPs, HONDO and 20-SQUAD get a call to come in; they assist FBI Agent Jackie Vasquez in capturing the dangerous fugitives, before the death toll rises.

The squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles; Tan finds himself questioning his leadership abilities; Powell and Alfaro compete in a classic game of S.W.A.T. tag.

Tan finds himself on a one-man mission to save his new love interest and her journalist co-workers when mercenaries take over a black-tie correspondents' dinner; Hondo and Nichelle return home to find their house trashed.

When back-to-back shootings at women's clinics leave two healthcare providers dead, Hondo and the team investigate whether the shootings were politically motivated.