
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 spree of brutal stash house robberies spills into Los Angeles, the team joins with the sheriff's department's gang unit to unmask a violent crew who leaves no witness alive.

Following a string of violent home robberies, the team rushes to stop a crew targeting elderly victims; Hondo's longtime friend and former Marine squad leader Danny Wright turns to Hondo for help when his daughter goes missing.

SWAT teams up with the DEA to conduct a massive gang sweep, only to discover that a vicious cartel is planting roots in the city and endangering numerous lives; Hicks marks an important anniversary.

The team faces a prison hostage situation, only to be thrown into deeper danger when a bomb explodes, freeing maximum-security prisoners from their cells, including someone with a personal grudge against Hondo.