The story of a city—and of the man who changed its fate during a decisive decade in Bulgarian history. In the figure of Eng. Ivan Ivanov—mayor of Sofia from 1934 to 1944, creator of “Greater Sofia,” and initiator of key infrastructure projects—we see the drive for a modern, sustainable capital. His work left lasting marks on water supply, energy, and urban planning, turning Sofia into a European city with a vision for the future. This documentary film narrative follows his path through testimonies, historical analyses, and archival materials, revealing both the scale of his achievements and the drama of the political reckoning after 1944. Supported by facts and personal memories, the film preserves the legacy of a forgotten figure and prompts reflection on the price of professionalism, vision, and moral responsibility in times of ideological conflict.