A fantastic story from the series “In the Depths of the Great Crystal”, the heroes of which find themselves in new adventures. The research group “Crystal-2”, in which Vitka Mokhov’s father works, is struggling with the problem of transition from one space of the Universe to the neighboring one. By chance, Vitka, who has unusual abilities, manages to discover the secret of the transition. He penetrates parallel worlds and finds friends there, with whom he overcomes many dangers, develops his abilities and learns to use them to fight evil and help others. In the most difficult situations, the rooster Krieger comes to the rescue of the children. Only thanks to the fearless bird Vitka manages to save his father from death...