Fang, a young and innocent female dancer, has a pure love for dance. Her experienced and strict female teacher, Xue, who used to capture the spotlight on the dance floor, has an extreme pursuit of performance. The power of obsession, however, has almost driven her crazy. The relationship between master and apprentice becomes entangled with mutual obsessions, causing a great change in both their lives. Will an unexpected failure transform Fang's own obsession into paranoia? Life is an experience with various obsessions. But is obsession the motivation of living? Or is it simply the reason why we exist?