Ex-spy Max Easton is brought out of retirement against his will by George White, London chief of MI6/CIA team The Section. Max's wife Anna, with whom he has lived in the Pyrenees for the past ten years, starts an investigation into her husband's past. What she finds puts her and her young daughters in grave danger.

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 stationed there.

When Amanda Jones arrives in London she brings the full force of CIA dissatisfaction to bear on White, who struggles to retain control. Now in Beirut, Max and Leyla begin to work together to decipher the real purpose of The Section's Tehran mission.

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 faces a new threat, Leyla reveals another piece of the puzzle, while White and Jones play dirty.

Max is reunited with his family, but danger is not far behind. He travels to London.

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.