In May 1940, Corporal Raines (Danny Dyer) and his three comrades were asked by an officer to participate in blocking the German army on their way to Dunkirk. Raines disobeyed orders and was imprisoned in a military prison. At the Naval Intelligence Service, Major Jones (Sean Bean) received a highly confidential mission: At that time, Germany's radar technology was ahead of European countries, and radar stations along the Atlantic coast formed an invisible network. Jones was ordered to form a special forces unit to destroy the German receiving station. Jones fished out his old subordinate Lelling in the military prison and took Raines away "on the way". In the Highlands of Scotland, Jones conducted rigorous training for Raines and other special forces. There was only one chance for this mission, and the shortcomings in the early stage could lead to a complete loss. The special forces finally landed in Norway and made contact with the local guerrillas. The final test officially began...