Journalist Andriy Krainiy is a true erudite, fluent in living and dead languages, but somehow things didn't work out with material values: having lived to the age of Christ, he doesn't have a roof over his head. It's not for him, a homeless man, to disdain a warm apartment - even if the cherished key was handed to him by a strange stranger, and the apartment number inspires superstitious fear. What was it: manna from heaven or an unfortunate mistake? Soon Krainiy will need two more keys: to the mystery of the disappearance of the owner of apartment number 13 and to the heart of a fatal woman, who is not so easy to reach...
