It’s 2029. When they walk through a park, Harl and Ellen talk about their works and their lives. They are lovers each other, but their work as scientists is more important for them than their love. Harl plans to leave Earth, on a long journey through space. For Harl, his journey through space will take eight years, but for the people on Earth, it will be a hundred years. So, when he returns to Earth, Ellen will be long dead. And Ellen plans to stay on Earth, to carry out Project X. This project is going change the world, to make a world of telepaths. All people and animals on Earth will be telepaths. They all know what another person is thinking. After Harl knows this project, he leaves Earth. When he returns to Earth, it’s 2129. Harl and his fellows try to find people in 2129. But there is nobody on Earth and the cities are dead. In the streets of Rome, they find lions are fighting. And they notice the lions are telepaths. So, they understand that Project X changes everything on Earth. One day, the visitor arrives – a real living man. He is very old. And he tells them what happens on Earth for a hundred years. He says the telepathy kills all people. Because of the telepathy, people have got bad minds. People know all terrible things that go on in their and other people’s minds. They can see, hear, and feel everything, every minute of their waking lives. Living with that terrible noise of other people’s minds in our head all time is so uncomfortable and dreadful. Because of the telepathy, people can’t believe each other and can’t marry and have children. So, nobody is left in the world. The man asks them to start things again like before 2019 because there are two women on the space ship