Yee, a costume designer, is under great pressure as she has just been promoted from a small drama club to a big theatre company. She then finds that one of the actresses in the play is Bella, her old friend in secondary school, reminding her the disgrace of being Bella’s understudy in the past. Stressed out after meeting Bella, Yee loses her efficiency at work and her capability is being questioned. Yee blames all of them on Bella and starts thinking about killing her...