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.

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 (Annie Ilonzeh), a cop with a family background deeply entrenched in crime.