During the war in Afghanistan, a local interpreter risks his own life to carry an injured sergeant across miles of grueling terrain.

Mardik, a Dutch detective of Afghan descent, receives word that his childhood friend Faysal has come to the Netherlands. When a terrorist attack occurs the next day, Mardik suspects Faysal and investigates, with drastic consequences.

A specialized team is responsible for the country's State Security. This Antwerp cell operates from the bunker, a secret and underground headquarters