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The protagonist is the photographer. He has his own job and a lovely girlfriend. He leads a plain and happy life in Beijing. After get off work every day, he cooks food and waits for his girlfriend to come back. But it did not last long. One day, Haoran had a dream. In his dream, he was chased by a man in black in a dark forest. He can't escape. Whenever he closes his eyes, he will go back to his dream and be in a trance all day. With the deepening of the plot, the man in black walked out of the dream and came to Hao Ran's eyes. Haoran couldn't believe what was in front of him, and didn't know why it happened to him. Just when Haoran was about to collapse, Haoran's friend Xiangzi woke him up. It turned out that the man in black in the dream was Haoran himself. Due to his jealousy and suspicion, his girlfriend unfortunately died in a car accident. Haoran, who loves his girlfriend deeply, blames himself, depresses herself for a long time, and suffers from mental illness