Greece, 1948. In the civil war there was a turning point in favor of government troops. The underground communist cells in the big cities are being liquidated one by one by one by the political police. At the same time, the executions of supporters of the Democratic Army of Greece are carried out almost without trial. In these conditions, six young underground men, feeling that the noose around them is mercilessly shrinking, decide to take a desperate step. To escape from Greece, they plan to hijack a plane making a regular flight from Thessaloniki to Athens.