"Halkion" is an exciting fantasy story that transports readers to the future, where technology has begun to supplant human life. The main character, a young researcher Elsa, finds herself at the center of events when her invention - the impressive but dangerous intelligent interface Halcyon - falls into the hands of criminal organizations. Guided through convoluted plot twists and unexpected encounters, Elsa is forced to make the difficult choice between keeping the Halcyon in her hands for the good of humanity or destroying it to protect it from harmful use. "Galkion" is a book that will leave the reader impressed and thinking about the future of the relationship between technology and human values.