Section 20, a secret unit of British intelligence services that houses a number of highly trained agents, shoulders the responsibility of special missions that include high-risk operations around the world.
When an international terrorist takes down one of their own, Section 20 recruits a former Delta Force operative to identify the elusive terrorist, avenge their fallen comrade, and stop the terrorist's operation.
While on the hunt for nuclear triggers, the team discovers a tie between their operation and a famous billionaire, making their mission more complicated.
The search for the killer of one of their own leads Section 20 onto a worldwide hunt that entangles them with a known terrorist and a drug cartel in cahoots with him.
What starts as a rescue operation embroils the team in a criminal conspiracy to spark a war between North Korea and the West, as a crime syndicate manipulates the situation and stages a kidnapping to spark a conflict.
As the members of Section 20 deal with the restructuring of their unit and their new leadership, they are handed a mission to prevent a terrorist attack against the West by locating the mastermind and his wife.
Section 20 is called back to duty to look into the crash of a Russian bomber, a mission that quickly escalates to a race against time to find a missing nuclear weapon.
Section 20 is in for the fight of their lives when their investigation into a terrorist plot targeting the West reveals a wider conspiracy that implicates several Western intelligence agencies.