Ad-lib-ui Sin

A thirty-year-old man without a job, Lee Tae-Gyu, has been living a dull and emotionally numb life. Seeking a way out of his monotonous existence, he meets an enigmatic older man who gives him the ability to copy others' emotions using a will-o'-the-wisp. As he experiments with this new power, he crosses paths with a screenwriter named Kwak In-Ho. This meeting leads to a dramatic shift in Tae-Gyu's life, pushing him toward an unfamiliar future. He begins to consider a new direction—pursuing a career as an actor.