A specialist carrier is hired to deliver a mysterious case to the underworld's most dangerous hitman.

A surreptitious smuggler gets solicited by the CIA to help cover-up the Nicaraguan blackmail attempt on the CIA, after the release of "Dark Alliance", by Pulitzer Prize winning journalist, Gary Webb.

A joint task force operation is protecting a witness, Nick Murch, who is due to testify against powerful crime lord Ezekiel Mannings. At the safe house, a courier rings the bell to deliver a package, which is then revealed to be something that will jeopardize the trial, leaving the blame at the feet of the courier. After someone tries to kill the witness and the courier during the package drop, she devotes herself to protecting Nick, to make sure he finishes what he has set out to do.

In the shadow of the Cold War a letter from Oleg Penkovsky (Merab Ninidze) an agency of the Soviet Union received by MI6 stating the concern of Penkovsky about world safety and his anxiety about a nuclear war, So Emily Donovan (Rachel Brosnahan) a CIA Agent reached out to MI6 Agent Dickie Franks (Angus Wright) , who recruited British salesman Greville Wynne (Benedict Cumberbatch) to be their spy.