International Film Festival Rotterdam (IFFR) will open on Wednesday January 21, with the international premiere of Tom Harper’s political thriller "War Book," which tells the story of a war game between a group of government officials, which reaches boiling point.

Further, the film "takes place over 3 days as 9 civil servants gather in a government building to take part in a policy shaping scenario. They are there to take decisions on Britain’s reaction to an international nuclear attack. At first the participants are casual, playing out the scenario against a backdrop of their own petty squabbles and personal ambitions. Only 2 participants know the truth – that the country is secretly facing a real nuclear threat, and that their theoretical responses may become reality sooner than they can know. As the scenario escalates and the group begins to address the breakdown of civil order, the reality that they are deciding our futures dawns. When personal politics crash irrevocably into the room, each is forced to look closely at what they really believe, and how much their decisions are actually worth."

As you can see in the official cast image above, the film’s starring cast includes 2 familiar faces in Sophie Okonedo and Nathan Stewart-Jarrett of "Misfits" fame. They are joined by Ben Chaplin, Phoebe Fox and Shaun Evans.