Ex-spy Max Easton is brought out of retirement against his will by George White, London chief of MI6/CIA team 'The Section'.

In Washington, we meet the CIA's Amanda Jones. Max, now in Beirut, doesn't know who to trust after speaking to Leyla, a member of The Section team there.

When Amanda Jones arrives in London she brings the full force of CIA dissatisfaction to bear on White, who struggles to retain control.

Anna and her brother struggle to protect her daughters in France. Alexander Said, who led the team in Tehran, arrives in London, but The Section head is in no mood for forgiveness.

Anna and her brother struggle to protect her daughters in France. Alexander Said, who led the team in Tehran, arrives in London to see White, but The Section head is in no mood for forgiveness. Max and Leyla stumble upon some information that could help them.

Max is reunited with his family, but danger is not far behind. He travels to London and finally manages to get to White.

In London, Max's digging stirs the attention of a sniper. In Washington Jones sends out a team to recover scientific evidence from an Iranian desert facility.

Max heads to the US and may have finally discovered the real reason why the Tehran unit found themselves on The Section's hit list.

In Mali, four U.S. Special Forces and a translator are supposedly killed in an ambush. This delays a procurement deal in Washington, and it is up to the deep state’s operative Nathan Miller to make sure everything goes to plan, while also battling to keep his family together.

Miller, along with Amanda Jones, flies to Mali to contain an increasingly unstable situation. In order to make sure a deal gets over the line, he hatches a plot that will tie up a number of loose ends for him.

Harry and Leyla learn from Aïcha that this has all been about arms smuggling from within the Malian government.

True to her word, Aminata Sissoko reunites Aïcha with her family, but as she does Harry and Leyla are arrested on murder charges.

Harry, Aïcha and Leyla are driven, out of necessity, to return to Al Moctar’s camp. In the search for the trio, Jones reveals a sensitive piece of information to Miller.

With Aïcha being dragged to a scaffold, Harry must plead his case and convince Al Moctar to hold off.

On the trail of their breadcrumb, Harry, Leyla and Aïcha do some more digging, but they are eventually caught by US soldiers. Leyla and Aïcha manage to get away, but Harry is arrested.

Finally, all the pieces of the puzzle come into place, and the connection between the arms trail and the deep state is laid bare.