I Am Sun Mu follows North Korean defector and artist Sun Mu as he uses his artwork to challenge the regime he once lived under. Known for blending North Korean propaganda imagery with themes of freedom, consumerism, and political expression, Sun Mu has built a career around reinterpreting the visual language of the state he escaped. As preparations begin for a landmark exhibition, the documentary explores both his personal journey and the risks that continue to follow him. Through intimate access to his creative process and reflections on life before and after defection, the film becomes a powerful examination of identity, freedom of expression, and the role of art in confronting political oppression.