Just yesterday he had his own apartment, a job, friends, a dog, a well-established life... and today the world seems to have turned upside down - no one recognizes the guy, even those closest to him, and the documents confirming his identity are crumbling into dust. Crazy? No, a cruel test, after which Kirill becomes a functional - a person endowed with superpowers and the ability to move between parallel worlds. Who are these functionals? What is their purpose? And how will Kirill pay for his new, improved life?