Hondo's life and career are endangered when his bosses and his godson's kidnapper, Jae Kim, discover he's been secretly surveilling Kim with the help of retired DEA agent Katrina Walsh. Also, Street and his newly paroled mother, Karen, both have trouble acclimating to her prison release.

A fake 911 call puts Hondo and the SWAT team on the hunt to stop a white supremacy group from executing bombing attacks on local communities. Also, Street's relationship with his recently paroled mother, Karen, jeopardizes his career, and Jessica is thrown a curveball by her colleague, Michael Plank, president of the police commission.