The virtual world called “QUEST” is a revolutionary development by the best specialists in the field of medicine and psychotherapy, which can become a panacea for both physical ailments and psychological problems. However, in order to be cured once and for all, you need not only to defeat the creatures of the Zone, destroy enemy soldiers and help the unfortunate creatures from legends. The most difficult thing in "QUEST" is to overcome the main enemy - yourself. Dr. Simonov, in the hope of resounding success, sends teenagers Sasha and Marina on this dangerous virtual journey. No one could even imagine that a reliable computer system would fail, and there would be no turning back for teenagers... Sergei Derkach’s science fiction novel “QUEST” will take the reader on a dangerous and cruel, but truly fascinating journey into a world where there is nothing impossible.