"Men Without a World" is set in a future where Earth has been rendered uninhabitable due to a catastrophic event. The surviving humans are forced to live in domed cities on other planets and moons throughout the solar system.The novel follows the journey of a group of men who are tasked with exploring and colonizing a newly discovered planet. As they travel through space, they encounter various challenges and dangers, including hostile alien creatures and environmental hazards.As the men struggle to establish a new home on the alien world, they must also contend with internal conflicts and power struggles within their own group. Amidst the hardships of their journey, they must confront difficult questions about survival, morality, and the nature of humanity.