Childhood friends Ahmet and Nuri, the sons of poor farmers, grew up together, studied together, and worked together in a factory. Together, they publish the magazine Light, which opposes the colonial policies of foreign capital and military pacts. After their first imprisonment, the friends' paths diverge: Nuri betrays his convictions and joins a reactionary newspaper. His life is now safe, but he finds no joy or peace. Meanwhile, Ahmet, having become one of the main enemies of the reactionaries, attracts more and more patriots to his side.