There is a rumor on the Panum Institute. Four doctors who have worked with dissection of corpses in the basement have fallen ill with cancer at a very young age. The bodies contain the toxic and carcinogenic gas formaldehyde. Christian is one of those who has become ill. He now wants answers as to whether there is a connection between the cancer and the work with the bodies - or whether it's a coincidence? His search for answers leads from the basement of Copenhagen to the chemical lobbyists in Brussels.