This study expands the concept of trans-identity storytelling and explores its potential as a film criticism methodology. Trans-identity storytelling is a theory that studies narratives from the perspective of characters on the premise that the composition of movie narratives is developed with a focus on the change of person's identity. In order to be precise in the content of the concept, the etymological meaning of ‘Trans’ and the perception of existing scholars were examined, and the characteristics of incompleteness of words were useful in explaining beings that were wealthy or changed in the world's recognition system. The concept of ‘Trans-media storytelling’, a relative concept of trans-identity storytelling, was critically reviewed, and it was revealed that both industrial and humanistic values were included due to the content-oriented and human-oriented nature of the concept. In addition, trans identity storytelling is connected to the traditional narrative writing principle and embraces popularity in that it aims for a change in characters. On the one hand, the act of changing identity is a phenomenon that deviates from the universal realm in defiance of the solid recognition system of the existing society, and encompasses the value of diversity in terms of individuality and specificity against universality. In other words, trans- identity storytelling is a narrative theory that can convey their stories interestingly while illuminating people outside the mainstream of the world. Furthermore, if film criticism is a work to seek positive changes in the world by discovering profound content on the basis of film's outerization, trans-identity storytelling, which criticizes the world's dichotomous perception system and respects the values of various humans, becomes the foundation of endless profoundness. Film criticism and trans-identity storytelling can be connected by a shared point that aims for change in humans and the world. In the future, we hope that trans-identity storytelling, which conveys the value of humanity, will become rich and that movie criticism from the perspective of trans-identity, which leads to the transformation of the world, will become the mainstream.