The true story of British intelligence whistleblower Katharine Gun who—prior to the 2003 Iraq invasion—leaked a top-secret NSA memo exposing a joint US-UK illegal spying operation against members of the UN Security Council. The memo proposed blackmailing member states into voting for war.

A grieving couple move to a remote Irish village in the wake of their baby daughter's death. They soon take in an orphaned autistic girl, only to become involved in a series of strange occurrences.