The Midsummer celebrations of the newly elected President of the Republic, Linnea Saaristo, are interrupted, and Defence Forces Captain Rami Ohrankämmen and the young conscripts are surprised when the enemy invades Finland.

The enemy's demands cause conflicts within the country's leadership. Annika Berg's conscript group struggles to survive. Information influence and cyberwar begin.

President Linnea Saaristo sends special forces to the occupied territory and Prime Minister Kaj Laavakuru acts suspiciously. The enemy threat grows, but there is no way to retreat.

The special forces make unpleasant discoveries, and Captain Rami Ohrankämmene's own operation leads to danger. Prime Minister Kaj Laavakuru's suspicious activities come to an unexpected end.

The escape of Annika Berg's conscript group is interrupted. As the conflict escalates, President Saaristo is forced to make a difficult decision.