Thomas Edison and Nikola Tesla back opposite visions for how electricity should reach American homes, and this History Hit film traces the fight that decided it. Edison has already built an empire on direct current, with generating stations and patents locked down, when Tesla, backed by George Westinghouse, pushes alternating current as the only system that can carry power over real distances. The film follows the public relations war that came with the technical one, including Edison's campaign to brand AC as lethal, and the Niagara Falls power project that eventually proved Tesla's system could scale. Interviews and period photographs fill in the personalities behind the patents: Edison the relentless self-promoter, Tesla the visionary who died with little control over the technology he pioneered. Rather than a simple morality tale, the film treats the rivalry as the moment the modern electrical grid took its final shape, with consequences still running through the wires of every house built after.