This film is about construction workers who are building a nuclear power station. Some of them have traded their prestigious engineer professions for worker ones, and as they embark on their new activities, they wonder about the possibilities of harnessing the atom. Director Volodymyr Heorhiienko and the collective “Ukrtelefilm” studio created a number of films about the construction of the Chornobyl NPS in the 1970s, including the first installment “Morning of the Atomohrad” (1974) and the follow-up films “Light Up Your Sun” (1976) and “Chain Reaction” (1978). The labour efforts of people were always in the focus of these ideologically-correct reportage films, the pathos of which was depicted by Heorhiienko with exceptional talent. In “Light Up Your Sun”, the romantic view of labor is presented in the example of members of the komsomol, who had arrived from a multitude of Soviet republics to build the Chornobyl NPS. To add a sense of greatness to their efforts, the film references the Soviet literary idol Pavka Korchagin, who “not far from these places built the narrow-gauge railway”.