When an auto carrier truck gets hijacked by a high-speed crew, Hondo encounters a ghost from his past - a violent car thief thought to be long-dead. The brutal road warriors tear across L.A. in pursuit of a mysterious $60 million car.

The SWAT team undertakes its final mission when a violent crew of ex-pat Russian mercenaries holds LA hostage after planting hundreds of explosives across the city.

Hondo, his father Daniel Sr. and his teen charge Darryl confront the history of racial tension in Los Angeles between law enforcement and the Black community, through flashbacks to the city in 1992 following the Rodney King verdict. Also, the SWAT team pursues El Diablo’s scattered drug cartel hiding in the city and a Jihadist group detonating bombs in coordinated attacks,

Hondo is conflicted when the mayor asks him to be the public face of a new outreach campaign meant to improve the LAPD's stature within the Black community. Also, the team's search for a lone bomber reminds Tan of a difficult chapter in his childhood, and Chris pushes herself even further to surpass Street and Tan in a SWAT leadership competition.

The SWAT team struggles to maintain peace on the eve of a Los Angeles LGBTQ pride festival after a hate crime sparks citywide anger that ignites further violence. As Chris grows anxious for her fellow LGBTQ community members calling for retribution, the festival reunites Commander Hicks with JP, his estranged gay son. Also, Street worries his mother will be sent back to prison after she fails to check in with her probation officer, and Deacon gets unexpected medical news regarding his newborn daughter.

The SWAT team searches for a rogue member of an extremist group planning to attack the memorial service of a famous musician who was outspoken about police brutality. Also, tension mounts between Hondo and Leroy, Darryl's father, when Leroy is released from prison early.

The team participates in a joint task force with the FBI when a car bombing has ties to a terrorist group planning an attack in Los Angeles; a tragedy from Deacon’s past gives insight into the origins of his faith.

The SWAT team races to stop a gunman targeting rehab centers and those he considers responsible for his brother’s death. Also, Deacon is caught off guard when his wife, Annie, makes a parenting decision that has unexpected consequences for their daughter.

Hondo and the SWAT team spread out across Los Angeles in pursuit of four escaped convicts, including a violent criminal Jessica helped bring to justice, before department rival Mumford and his team beat them to the collars. Also, Hondo’s new role as team leader is called into question when Street displays a flagrant disregard for SWAT protocol.

Newcomer Jim Street jeopardizes his spot on Hondo’s team when he agrees to do a favor for his incarcerated mother that endangers his SWAT career. Also, the SWAT team searches for the ruthless mastermind behind a drug trafficking ring that forces immigrants to be mules.

Hondo and Jessica’s secret relationship comes to a crossroads when Michael Plank, the president of the police commission, discovers their affair. Also, when Hondo and the team assist with the federal investigation to bring in an undocumented fugitive, they find themselves at the center of a citywide immigration debate.

Hondo is conflicted when Leroy, his incarcerated childhood friend and Darryl's father, asks him to speak on his behalf at a parole hearing. Also, SWAT helps the FBI track down a mob informant on the run from the crime family he is meant to testify against, and the team dynamic becomes complicated when Street and Tan sign up for a leadership competition Chris has been training months for.

Hondo and the team race to locate the hacker responsible for accessing LAPD's computers and revealing the identities of undercover officers; Street is forced to reckon with past misdeeds.

When Hondo’s imprisoned childhood friend asks him to protect his son from gang violence, the favor brings SWAT into contact with a new local crime outfit. Also, when Luca’s grandfather, a SWAT legend, passes away, he struggles with his grief and a painful family secret.

The SWAT team tries to determine the next diamond dealer to be robbed by a group of highly organized thieves executing heists across downtown Los Angeles. When Hondo is emotionally affected by a suspect’s death during the case, he seeks comfort from his mother. Street worries that his SWAT training academy instructor has a personal vendetta against him. Chris contemplates an unorthodox relationship offer from the new woman she’s dating.

The SWAT team races to find a stalker pursuing a social media star, after the online celebrity's dangerous admirer turns a fan event into a shootout that endangers Jessica.

SWAT searches for a group of extremists carrying out coordinated attacks against local businesses. Also, Deacon and his wife, Annie, find themselves at odds when Annie wants to enroll their daughter, Lila, in private school.

The team tries to track down a media-savvy crew of bank robbers who consider themselves a band of modern-day Robin Hoods, funneling stolen cash back into their struggling neighborhood, before the mission turns deadly. Also, Hondo and Deacon clash over how to deal with a group of cops' racist views.

When the team responds to a home invasion call, they uncover a murderous plot against a famous pro football quarterback; Hicks gets a long-awaited lead on a Jane Doe case he worked 20 years ago.

When the team discovers an illegal weapons dealer has sold stock to someone targeting a high-level politician, they rush to stop a deadly ambush.

When a convicted killer makes a prison break, the team works to protect the people on his hit list; Hondo unexpectedly crosses paths with an old flame.

When the team stops the flash-mob robbery of a department store, they fear the crime was designed to distract from something more sinister – murder. Also, Hondo enlists Street to connect with Powell after she ignores orders in the field.

When violence erupts at a popular food truck festival, the team must contend with a deadly cartel determined to recover a large lost drug shipment at any cost.

The team races to uncover the identities of kidnappers holding a prison guard's family hostage; Tan is faced with a difficult personal decision.

A locally born SWAT sergeant, former Marine Daniel “Hondo” Harrelson, is newly tasked to run a specialized tactical unit that is the last stop in law enforcement in Los Angeles.