Nikola Tesla, a brilliant but eccentric inventor, struggles to bring his revolutionary electrical systems to fruition. The story delves into Tesla's complex relationships with other prominent figures of the era, including his rival Thomas Edison. As he battles against the odds in pursuing alternating current technology, Tesla's financial issues and clashes with Edison's direct current advocates create a tumultuous professional environment. The narrative is interspersed with modern-day reflections and speculative sequences that highlight the trials Tesla faces in both his personal and professional life.

Tesla's friendship with Anne Morgan, daughter of banking magnate J.P. Morgan, provides emotional depth as she narrates parts of the story, revealing the inventor's internal conflicts and lofty ambitions. His partnership with George Westinghouse further shapes his career as they work collaboratively to promote AC power. Amidst these professional pursuits, Tesla remains a visionary yet lonely figure, driven by his quest for innovation and haunted by the limitations placed on his groundbreaking ideas. The film captures the relentless spirit of an inventor whose impact on the world of electricity and modern technology endures despite numerous setbacks and personal sacrifices.