Nuclear Exodus lays out the case that nuclear power and nuclear weapons pose risks the industry and governments have downplayed for decades. The film moves through the history of atomic energy, from weapons testing and Cold War stockpiling to civilian reactor design, using archival footage, technical diagrams, and narration to explain how meltdowns happen and what radiation actually does to bodies and ecosystems. Chernobyl and Fukushima serve as central case studies, with the film walking through the sequence of failures at each site and the long-term contamination that followed. It also spends time on nuclear waste storage, the problem of material that stays dangerous for thousands of years, and the gap between official safety assurances and what independent scientists have measured. The back half turns to alternatives, weighing solar, wind, and other renewable sources as replacements for a technology the filmmakers argue is inherently too dangerous to manage safely. It is an advocacy film, built around interviews, footage, and a clear argument rather than a neutral survey.