The SWAT team pursues a group of unknown assailants responsible for a patrol officer’s death before tension in the city between the police and the community explodes. Also, as Chris reels from the revelation that she knew the patrol officer who was killed, Deacon and his wife, Annie, prepare to welcome their newest child.

Deacon’s family gets caught in the crosshairs of a drug cartel when he and the SWAT team aim to bring down its leader, a former foreign rebel force leader running drugs in plain sight via a local flower market. Also, Hondo receives troubling news regarding his father, and Tan is forced to go before an internal review board due to his girlfriend’s indiscretion.

Deacon’s second job working private security at a high-profile boxing match places the SWAT team in the middle of a kidnapping case when a prize fighter’s wife is abducted. Also, Hondo’s young charge, Darryl, becomes frustrated with his lack of paternal rights regarding his infant son, and Tan prepares to introduce his critical mother to his girlfriend, Bonnie.

The SWAT team searches for an escaped convict who plans to kill Tan and every member of law enforcement who helped put him in prison years ago. Also, Chris comes face to face with internal corruption when she arrests a young man who is given a free pass due to his powerful father, and a surprise visit by Hondo’s sister, Winnie, puts pressure on his relationship with Nichelle.

The bombing of a Los Angeles police station puts the city on edge, leading the team to a final showdown with a group of domestic extremists. Also, Hondo faces the fallout from a bold decision that threatens his future, and Tan takes a big step in his personal life.

Hondo returns as leader; the team is pulled into a dangerous case involving a large stockpile of cash and the Russian mob; Daniel Sr. opens up to Hondo about a painful time in his past.

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

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