A couple hires a professional digger (underground structure explorer) to help them find their friends, who mysteriously disappeared in the subway.

1919, Solnechnomorsk. Talented adventurers have become too unexpected: now they are wanted by the Russian and Turkish police. They go to the south of Russia to take possession of the golden scepter of Count Rumyantsev. In pursuit of a precious little thing, terrorists, circus performers and even participating ladies can dress up as them. Meanwhile, Ostap’s mother is approaching the paws of the gloomy Satanist Crowley, in whose treasury, by a mysterious coincidence, there is also a scepter ...

A group of students stops to spend the night in a house that, at first glance, appears very cozy and welcoming. Upon checking in, they sign a set of house rules—unaware that, in doing so, they are signing their own death warrants. To survive and escape, they must unravel the mystery of the old house.