Doors between Worlds 2 - Aessi #886261

It was supposed to be a simple return. Maybe even with borsch, a blanket and stable internet. But no.
The friends had just come out of another dimension, and reality - as usual - decided that it was too early for them to rest. Instead of coffee in Kyiv, there are whispers of ancient places in Ukraine, strange nodes of the Doors network, and even greater opportunities that ‘suddenly’ activate at the most convenient moment.
But to be honest... when was it ever different?
If you're looking for adventure, humour, a little bit of scientific magic, and heroes who aren't afraid to ask stupid questions (or at least not be shy about it), you're welcome. We have opened the Door again.
And it seems that we have forgotten where the switch is again.
The book is also available in Ukrainian and Russian.
The official video. No spoilers, but with riddles: https://youtu.be/Kx3VjBXaafA