While the country is preparing for the holiday, a sudden attack by an unknown enemy turns a small coastal city into a zone of fighting. Annika Berg and her detachment find themselves in the epicenter of chaos, trying to survive and understand what is happening. Meanwhile, Captain Rami Ohrankyammen, realizing the scale of the threat, leaves his post to find his family in the conflict zone. However, he quickly understands that the enemy is acting systematically, and his invasion is not a coincidence, but a carefully planned operation. The situation becomes even more complicated when it becomes clear that among the hostages in the seized territory are family members of the recently elected president, Linnaeus Saaristo.