Harris Maloub, a killer with an erased official past, now in his fifties, is visited by someone who could not be alive and given an assignment. In Aarhus, Denmark, Jens Erik, police officer on pre-retirement leave, somehow cannot forget the body of a Black man recovered from the sea some years ago. On an abandoned oil rig in the North Sea, turned into a resort for the very rich, Michelle, a young Caribbean woman, realizes that the man she has followed to this job is not what he claims to be. And neither is the rig, where a secret laboratory bares to her a face that is neither human nor animal. Behind all this, there lurks the ghost of a seminar in 2007: most of the participants of that seminar are dead or untraceable. Why was their obscure research on plants and fungi and microbes so important? What is the secret that killed them? What is the weapon that powerful syndicates are trying to obtain – or develop?