Given the current climate of fear of terrorism, this docudrama dramatises what experts fear could be Britain's next major terror attack. Counterterrorism police believe that the greatest threat to security comes from Marauding Terrorist Firearms Attacks (MTFA). Based on real-life stories from inside the UK’s counter terrorism unit, The Attack tells the story of an ISIS-inspired terrorist group planning a firearms attack, and follows the on-going police investigation. It focuses on Joseph, a young man who, while in prison for drug charges, is recruited, converted and radicalised by Islamic extremists. The programme reveals how UK agencies are working to keep the country safe from a terrorist attack, but also the extent of that challenge.