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The continuation of the popular series of adventure and educational fantasy from Rafal Kosik «Felix, Net and Nika». The heroes of the book are ordinary Warsaw teenagers Felix Polonius, Nat Biletsky and Nika Mickiewicz.

Felix, Nat and Nika swore that they would avoid dangerous adventures from now on. There have been too many of them lately, and only by a miracle did everything end happily. However, only a week passes, and at the New Year's Eve celebration, they get into another trouble: the children accidentally launch an experimental rocket into orbit. But it's unstable and poses a serious threat - it's about to crash into Poland with the destructive power of a bomb! And it seems that nothing can be done about it, unless the trio of friends can figure out what microbots and spiked bots of unknown technology have to do with it.