It’s Christmas eve. Young-Woo (Gang Ye-Won) is a career woman and a workaholic. Her boss sexually harasses her and her coworkers resent her work drive. One night, she is knocked unconscious and kidnapped by Joon-Ho (Lee Hak-Joo) in the company’s parking garage. Joon-Ho works security for the building. Young-Woo wakes up in a new red dress with her kidnapper in his office. Young-Woo struggles to escape from Joon-Ho who has trapped her in the parking garage. He forces her to watch as he tortures her coworkers and demands her to decide which one he should murder. Meanwhile, voyeurs watch her torment for pleasure through the building’s CCTV.