November, the month of the dead and rain. An anonymous phone call wakes the Valdenza power station at the first light of dawn. Commissioner Casabona, who has been sleeping at the police station for a couple of days due to a clash with his wife, is the first to rush to the place. Under the old Campanelle bridge, on the edge of the wood where the mysterious community of Elves lives in seclusion, the body of a young woman is found, naked and partially charred.