Sergey Chernetsov is the head of the department of a completely extraordinary institute. The rarest combination of genes allowed its employees to be in one of two hypostases - a person or an animal. Of course, there were no elephants and crocodiles among colleagues. He himself shared his existence with a great white shark. A series of bloody events unfolding in the Neva and its environs testified to the fact that the protective ring of the Earth was broken and the Ancient Forces were rushing into our world. Their victory will leave no room for humanity. Unsuccessful attempts to fight aliens lead Chernetsov and his employees to an incredibly risky and, perhaps, the only correct conclusion - it is necessary to hit the very heart of the threat lurking in the stronghold of the Crimson World...