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 hospital employees are targeted by a gunman, the SWAT team races to find a grieving father whose son was denied a kidney transplant; Hondo searches for evidence behind an alarming rise in Los Angeles stash houses.

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 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.

When faced with a series of random shootings, one SWAT member’s family connections could be the key to stopping the next attack. Also, Hondo prepares to meet Nichelle’s parents for the first time, and Tan helps Luca navigate a sensitive situation.

The team races to stop a violent rampage with ties to a painful chapter from Hicks' past.

When classified information falls into the wrong hands, the team races to stop a dangerous plot targeting former members of the U.S. military; Luca is faced with a challenging choice when a family member suddenly falls ill.

The team works with the FBI to hunt one of its most-wanted fugitives; Hondo and Nichelle are faced with an unexpected development in her pregnancy.

20-Squad must leap into action when Yakuza assassins descend on L.A., targeting a number of mysterious Japanese ex-pats. Meanwhile, Nichelle finds her job on the line at the inspector general's office when a colleague accuses her of taking bribes.

SWAT hunts down a Chilean arms dealer after he kidnaps a woman and her daughter from a party in L.A. with unexpected intentions. Crossing paths with his brother, Tan is forced to come clean to his family about his divorce from Bonnie, while Hondo discovers that Hicks has received a job offer that could lure him away from SWAT.

After a prison transport van overturns, Hondo and the team hunt down three female fugitives, including a serial killer on the verge of a rampage. Also, with Annie’s return to work, Deacon struggles to maintain a work life balance, and Luca does his best to teach Kelly to drive.

When a female robbery crew "honeytraps" and kills several rich VIPs, Hondo and 20-Squad are called in to assist FBI Agent Jackie Vasquez in capturing the dangerous fugitives before the death toll rises. Commander Hicks is shocked when his new love, Maggie, abruptly ends their relationship without rhyme or reason. With help from Deacon and Dr. Wendy, Hicks makes an important decision about his romantic future.

As 20-Squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles, Hondo discovers a link to his own South L.A. neighborhood that brings a personal twist to the hunt for the deadly shooter. Meanwhile, Tan finds himself questioning his leadership abilities while Powell and Alfaro compete in a classic game of SWAT tag.

SWAT faces their deadliest adversary yet when a violent cell of extremists looks to extract vengeance by blowing up half of Los Angeles, potentially killing thousands.