A single mother buys a flat in the Soviet high-rise in Moscow, one thing she doesn't know - there is a mythical creature - a home elf (Domovoy in Russian) - lives in the flat for ages. And he is against any new tenants. There is also a witch who was paid to get rid of the home elf buy an estate agent, so she could sell the flat.. and the witch learns there is a treasure hidden in the old flat. Now the new home owners have to make friends with the home elf, who is protecting the flat from the witch as well.