The first eight-part series focuses on an act of terrorism committed on the Copenhagen Metro, where fifteen people are taken hostage.

Former soldier Philip Nørgaard (Johannes Lassen [da]), who is head of the PET Terror Task Force (TTF), tries to save the hostages with help from members of his elite team.

Lassen and his cast mates, except Ditlevsen, reprise their roles as TTF members, which deal with the Elsinore–Helsingborg ferry hijacking by four Islamic terrorists.

A police terror taskforce led by former-Jaeger Corps soldier Philip Norgaard (Johannes Lassen) and Louise Falk (Sara Hjort Ditlevsen) is dispatched to rescue them.

In Series 2, anti-ISIS fighter June al-Baqee (Yasmin Mahmoud) is kidnapped after alerting Philip that Danish soldiers were killed in Syria.