Mila Bogdanova is desperately trying to remember her past, which was erased from her memory, and not fall into the power of mysterious enemies. The main character's guide to a mysterious and dangerous parallel dimension, where she hopes to find answers to her many questions, is a young programmer nicknamed the Navigator. But it soon turns out that he is not at all who he claims to be. This young genius is a hunter who lures his victims into deadly traps. What should Mila do if the only ally in this game is the one who has hundreds of human lives to his name? Can such a friend be trusted, even if he says he loves her? And why is the Navigator sure that solving the mystery that the girl is striving for will destroy her?