Hondo and the SWAT team join forces with the FBI on a manhunt to find members of a militia group planning a domestic terror attack by weaponizing cyanide. Also, as Jessica's new police initiatives with Michael Plank, president of the police commission, move forward, she braces herself for the negative impact the plans could have on her relationships within the department.

Hondo and the team go on the hunt for a serial killer who escaped justice two years prior by faking his death. Also, Hondo worries that Buck Spivey, the team's former leader, is spiraling into depression in the aftermath of being fired from the department.