"Contract-I" is an exciting science fiction novel by Ukrainian writer Oleg Babai. The book tells about the future where humanity comes into contact with aliens. The main character, astronaut Ivan, becomes a participant in a secret experiment called "Contract-I". This mission should test not only physical, but also moral qualities of a person, which can decide the fate of the whole world. The author successfully combines philosophical thoughts, dynamic action and unexpected turns of events. "I-Contract" captivates from the first pages and leaves many questions, the answers to which the reader finds in the very heart of this fascinating book.