Tanya Sergeyeva is in shock—she needs to relieve stress on a dwarf rabbit the size of a bear! That’s her new job as a zoo psychologist: the traces of a missing girl Tanya had been looking for led to the mansion of businessman German Knabe, and that’s where she landed in this original position. At least now Tanya is “one of the locals” in the house—every door is open to her. But there are more than enough secrets in the estate: a ghost roams around and rings with tiny bells; the housemaids disappear without a trace—where to, it’s unclear; and there’s a secret passage… leading somewhere mysterious!