"Mana-73" is a science fiction novel by the famous Ukrainian writer Andrii Lazarenko, which tells about life on Earth in the distant future, in 2073. In this world, technology has reached a high level of development, but society is experiencing a crisis related to an ocean disaster. The main character finds himself in the very center of events when he learns about a mysterious significant phenomenon that threatens the existence of humanity. Investigating this phenomenon, he embarks on a dangerous journey where every step becomes a test and prompts him to think about the meaning of life and the future of civilization. "Mana-73" is a book that fascinates the reader with its atmosphere, philosophical background and unpredictable plot. It leaves behind many questions and helps to rethink one's own attitude to the world around.