McCall's vigilante work further complicates her personal life when she is forced to ask her ex-husband, Dr. Miles Fulton, to help with a gunshot victim: one of two women being hunted by thieves after they witnessed a robbery.

In the aftermath of her abduction, the walls between McCall’s family and vigilante life continue to crumble as those closest to her must come together for the first time to save her.

A local motorcycle club seeks McCall and the team’s help in keeping a member out of prison by proving the illegal guns found in his van were planted. Meanwhile, Delilah’s father, Miles, insists on knowing the truth about McCall’s work.

After a string of antisemitic hate crimes terrorizes a local community, Harry reconnects with his Jewish faith as he leads the team in finding the culprit before they attack again. Also, McCall must calculate what extremes she will go to in order to win custody of Delilah.

When a former Chinese MSS agent is poisoned and comes to McCall for help, McCall tracks down the perpetrators and the antidote. Meanwhile, Aunt Vi encourages Dee to protest against a well-known climate change denier.