College student Soshin Kang has made a deal with the devil. When poverty and violent loan sharks force Soshin to take up an offer from Aram, Soshin's high school friend-turned-bully, to live in Aram's lavish house with all expenses paid, it seems like a dream come true. Although Aram appears sweet and gentle, in reality she is a cold, manipulative stalker who is obsessed with Soshin and will stop at nothing to keep her to herself. As people around her begin to get hurt, Soshin finds herself in a race against time to uncover the truth and escape Aram's grasp.