Blizzard over the Card House

The wind whistles, the snow stands like a wall. Four teenagers, lost on their way, struggle through the blizzard. They know from the stories of adults how dangerous it is to get lost in the winter taiga, but before, all these stories seemed distant, like adventures from books. Exhausted, the kids come across a strange three-story house: it shines from all its windows, tempting them to enter, but how did this house end up in such a wilderness? And what is it - a sanatorium, a research laboratory? Inside, it is cozy and warm, a New Year's tree, garlands, but there are no human voices to be heard, and it would be better if there were no people here at all...