The reception for Finland’s Independence Day is rudely interrupted when the presidential palace is attacked and the state leadership is taken hostage. Max Tanner of the Security Police is appointed as a negotiator in the hostage crisis, that unfolds as part of a bigger plan to undermine European security.

An ex-terrorist, Madina Taburova, who was presumed dead, turns up in Helsinki seeking political asylum. Using a fake identity, the Intelligence Agency officer Mari Saari has to befriend this ex-terrorist to find out why she’s here. In order to uncover the mystery, Mari Saari has to form an unlikely partnership with an older streetwise narcotics cop. But everything is not as it seems.