The main character of the book is a professor who has experienced a lot of suffering. He lost his home, his friend and failed to protect humanity from the invasion of alien invaders. But thanks to him, millions of people found a new home in distant star systems. Unable to relieve the pain in his heart, he set out on a journey, hoping to find new civilizations and uncover the mystery of the black hole. After he established friendly relations between humanity and alien races, the professor rushed to the greatest black hole in the Universe and plunged into it. Everything that happened next, you can find out by reading this book.