This film tells the story of a middle-aged real estate tycoon - Jianguo Wang - suffering from a dual personality disorder exacerbated by extreme work and private life pressures. One day, he receives a call from a stranger. The stranger is able to mysteriously control Wang's car door from a distance. If Wang has a hope of opening the door, he must obey the stranger's increasingly bizarre orders. Based on the stranger's puzzling clues, Wang sees himself divorced from his beautiful but demanding wife Min, his lover Ling-Ling is murdered by a man donning a black coat in a hotel suite, and Wang's Real Estate empire collapses around him. In tantalizing morsels, the stranger continues to reveal the things Wang has done in the past. Finally, the stranger gives him a pill and Wang falls into a coma. After several minutes, in a darkened room the mobile rings again. Wang is standing in an unlit room with a menacing grin - dialing himself .