“O.K. Let’s go” is a film that takes us back to a moving, exciting and unforgettable period in time, the time of Liberation and emancipation. A young teacher – Partisan arrives in a small Serbian town. His wartime, partisan “pedagogy” conflicts with the old methods of work in schools. The children, of course, stand by their teacher, their true friend. The film is a child’s memory and remembrance of an evil, cruel period that left deep imprints in the children’s sensitive and delicate soul of entire generations whose childhood was wounded in the war. The story unfolds over a period of several months, between the fall of 1944 and the summer of 1945, when somewhere far away, in Japan, the atomic bomb is fried to announce a new-atomic era.