The film tells the story of the last days of the life of General Władysław Sikorski, just before the catastrophe. The commander is accompanied by Zofia’s daughter and a team of closest associates. They all host in the palace of Governor of Gibraltar, Mason Macfarlane, who is to persuade Sikorski to submit documents proving the murder of Polish officers in Katyn. When he strongly refuses, the attack on the general is being implemented. Who is behind him? Who did it and how did it run?