In 1975, four people arrive in Brussels to hold a meeting. They are following leads on the whereabouts of the former SS officer Ludwig Kessler, and their aim is to find him and unmask him as a war criminal.

Kessler is living in Germany under the name of Manfred Dorf, and he has a wife and children there who know nothing about his old life and identity. But the hunt is closing on Kessler, and when he discovers someone is after him he prepares to flee Germany. First he needs to get hold of something he can’t leave without.