Yun-hee joins a film project as a lead actress after the suicide of Yun-joo, her sister, and the movie's original lead. The film's director remembers Yun-joo as the methodical actor who identifies herself as the movie's character. Yun-hee tries to do just like Yun-joo, while she suffers from visual and auditory hallucinations of her sister. She even gets distant from her boyfriend Han-ki, whose love the sisters fought for long ago.