Based on the recognition that “collective memory,” which is the most notable concept in recent research on group identity, is essential for understanding a country’s national identity or ethnic identity, this paper examined the film Land of Promise by Soviet Korean director Lavrenti Son. In addition, it traced the evolution or transformation of the aspects of “collective memory” reproduced in the film of Lavrenti Son through his novels such as Area of Triangle or Memory. In this process, the paper analyzed his intention to produce the film, which was hidden at the point where he changed the scenarios of his films and plays. despite the same theme of forced migration and the reality of diaspora. At the same time, the narrative strategy of Lavrenti Son’s film for creating another myth was also highlighted from the fact that the people who have been forced to emigrate to Kazakhstan do not accept the memory as a mere tragedy, but discover the inner strength to overcome trauma and are reborn as “Kazakhstan people.” Through this, along with the fact that he had a dual identity as a Soviet Korean born in Kazakhstan, this paper clarified that the values of “mutual growth” and “coexistence” which he wanted to present through the film were connected with the policy direction of Kazakhstan, a multi-ethnic country.