What is International Sign? Explore the answer by joining a group of deaf youth from across the globe, as they embark on a life-changing journey to Denmark to participate in the "Frontrunners" educational program. From South Korea and Jordan to Brazil and the USA, these young adults bring with them unique experiences and varying fluencies in IS, creating a truly diverse and dynamic group. The film captures the fascinating process of students and teachers "calibrating" their signing to communicate effectively, forging meaningful connections and striving towards a shared understanding of what "International Sign" should look like. Through a blend of techniques, "International Sign Unpacked" explores the evolution of sign language usage and the inequalities that exist within this process, offering a captivating look at how International Sign communication evolves within a small group after its frequent use.