Set in a near-future South Korea, 'Babel Syndrome' explores a society where a mysterious 'Babel Syndrome' has emerged, causing people to lose their ability to speak freely. In this world, words have become a precious commodity, and citizens are restricted by a daily quota of spoken words, leading to a profound shift in human communication and social dynamics. The story follows Go Ha-neul, a young man who struggles to navigate this restrictive environment while harboring a secret. As he encounters others affected by the syndrome, the drama delves into themes of isolation, the value of genuine connection, and the desperate search for truth in a society where silence is often enforced by law and necessity.