The SWAT team is still after El Diablo drug ring; meanwhile Hondo, his father and Darryl examine the history of racial animosity in LA.
The SWAT team collaborates with the CIA, as they suspect that a crime lord who’s been off-grid for a while reappeared in LA.
The team tries to find an informant who escaped from the mobsters he had informed on. Leroy asks Hondo to speak in his favor at a parole hearing.
Owing to a threat to attack the singer Rhodium’s memorial, SWAT oversees the area to catch the person who made the threat. As Leroy gets released from prison, Hondo worries about Darryl.
As Hondo is approached to be the face of a campaign reaching out to the black community, he rejects the idea. When Tan learns that the bomber SWAT is after is a schizophrenic, it stirs childhood memories of his dad, who suffered from the same affliction.
Chris enlists the SWAT team’s help to save a teenager from the clutches of a religious cult leader. Tan’s wedding plans falls through. Hondo worries about Darryl after receiving disturbing news.
SWAT pursues a sniper who targets the LA Fire Department by setting fires around the city. Street and Molly’s relationship suffers a setback.
When a group of extremists launches attacks on some local businesses, the team tries to hunt them down. Deacon’s wife wants to enroll their daughter in a private school, causing her to fall out with him.
As a mission assigned to the SWAT team goes awry, each member tries to confront their own woes in a different way.
A new member joins the team, as they look for the main suspect in a woman’s disappearance; meanwhile, Chris and Street can hardly wait to know who the winner of a leadership competition is.
Mumford starts working on an 15-year old cold case for personal reasons. Hondo questions Leroy’s motives, as the latter tries to obtain money to fund a new business with Darryl.
The SWAT team tries to save a group of international activists, following a serious domestic complication.
A group of dangerous mercenaries is hunted by the SWAT team, whereupon the CEO who hired them earlier gets arrested for running a Ponzi scheme.
The team is forced to deal with the group liable for the death of Erika Rogers, a former team member, as they try to stop an imminent attack on the city.
A group of bank robbers who regard themselves as contemporary Robin Hoods are targeted by the SWAT team. Hondo and Deacon argue over the racist views of some cops.
Hondo and Deacon try to save the lives of civilians, as they get trapped in a courthouse, after some escaped prisoners took control of it. Street must make a tough decision, while visiting his mother in the hospital.
The SWAT team sets out to rescue victims from a ring of sex traffickers. Hondo clashes with Leroy and Darryl over their business. Street rails at Chris’s meeting his mother in the hospital.
Following the bombing of an LA police station, the team plans a face-off with a group of local extremists. Hondo deals with the consequences of a fateful decision.