 At a building site in Berlin a time bomb is found, which has two day left running. The historian Sandra believes, that the bomb - with many others - was placed there by a Nazi special force called "Thor s Hammer" to destroy Berlin, before it can be taken by the enemy. It looks like someone is still taking care of the bombs. Together with Inspector Lobenstein and her husband Alex, Sandra tries to find the surviving Nazi, who is the only one, who can stop the bombs.