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Book 1: The Secret Door
On a not-so-great day, schoolboy Arsen Hirnyk finds himself travelling from Kyiv to Volyn. It seems to be nothing strange - but a secret door leads from the Kyiv basement straight into the Volyn forests. At a time when Ukrainian rebels were resisting the Russian invaders...

In order for the secret door to open again, Arsen needs to consciously choose his "own" in an unequal struggle. And to help the UPA commander Zozulya defeat the insidious and bloodthirsty enemy...

And most importantly, to find the key to unraveling the secret of his own family, which was hidden from him...

"The Secret Door" is a new adventure and a bit of a fantasy story by the popular and most generous Ukrainian writer Andriy Kokotiukha. It is a fascinating and informative journey through time that leads to : days pass, years run, centuries change, but the enemy for Ukrainians remains the same. And this enemy can and should be defeated not by numbers, but by skill. Proven by the fearless Mr Kabanyuk...

Book 2. Ereb
At first, Nick is surprised by the sudden change in behaviour and mysteriousness of some of his classmates, but finally he finds himself in the space of the mysterious computer game "Ereb".

Because the tasks and quests are not just becoming more and more difficult - some, seemingly ridiculous, must be completed in real London life, and for skill, Ereb fulfils even Nick's unspoken desires, it knows his friends, his likes and even his fears.

But if you lose, then there is no way to return to the game. So is it possible to cross your conscience and lose your friends for the sake of the game? Where is the line between the virtual world and the real one? What is behind Ereb: mysticism or hitherto unknown technology? The reader will find the answer to these questions together with sixteen-year-old Nick Dunmore.