SWAT tackles a mission with personal ties for Hondo when they race to find a group of missing students and their bus driver, Hondo's former high school football coach. Also, Hicks has reservations regarding Hondo's new 20-Squad team addition, Devin Gamble, a cop with a family background deeply entrenched in crime.
When a spree of brutal stash house robberies spills into L.A., 20-Squad must team up with the sheriff's department's gang unit to unmask a violent crew who leaves no witness alive.
20-Squad faces down 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.
A blackout throws the city into chaos, forcing 20-Squad onto the streets for an emergency patrol day, which quickly escalates when Hondo and team uncover a terror threat.
When back-to-back shootings at women's clinics leave two healthcare providers dead, Hondo and the team investigate whether the shooting were politically motivated.
When two students are brutally attacked, 20-Squad contends with a possible honor killing. Meanwhile, Hondo and Nichelle have their first parenting dispute while searching for a suitable daycare.
When Hondo learns there’s a $1 million bounty on his head, 20-Squad must race to uncover the mysterious enemy from Hondo’s past who’s intent on revenge. Also, Deacon and Tan butt heads over Tan’s changes to SWAT academy.
While working undercover for 20-Squad, Alfaro encounters associates from a previous undercover case in Long Beach, embarking on a dangerous mission that stirs up unresolved issues from the past.
When violent robbers loot a museum vault, Hondo and 20-Squad must chase down the thieving killers before they flee the country; Tan reckons with the fallout from a SWAT Academy accident; Gamble nervously awaits the verdict of her lA investigation.
S.W.A.T.'s anti-terror sting operation at a bus station is thrown into chaos when felons, fleeing the police, burst in and take the bus station hostage; Bennett redoubles her efforts to force Hicks out as S.W.A.T.'s commander.