Nikola Tesla arrived in New York in 1884 with almost nothing, took a job with Thomas Edison, and split from him within a year over money and credit. This DW documentary follows the engineering fight that came next: Tesla's alternating current system, backed by George Westinghouse, competing against Edison's direct current for control of American electrification. It traces his research into high-frequency currents and wireless power transmission at a time when neither had any practical use yet, and credits him with anticipating solar energy's future importance decades early. The film does not skip the harder parts of his biography, including recurring poverty, failed ventures, and the eccentric habits that later made him a mythologized figure. It closes on his death in 1943, alone in a New York hotel room, despite holding over 280 patents. Historians and engineers appear throughout to place his work in context, weighing what he actually achieved against the legend that grew around him after his death.