Yin Ran (played by Cai Sibei) grew up in a harmonious family. She is honest and kind, and is loved by friends and elders. However, one day, bad luck came to her without warning. Yin Ran's parents both died in an accident. The insurance company refused to compensate, and the cause of the accident was also quite strange. After graduation, Yin Ran gave up the doctor's volunteer to save the dying and the wounded, and became an insurance company investigator, just to find out the truth of the incident one day to comfort the spirits of her parents in heaven. One day, Yin Ran met a strange man named Qiao Wenjie (played by Wu Qihua). Qiao Wenjie and housekeeper Zhang Kelai (played by Zhou Cong) lived a secluded life. Their life experiences in the past were all mysteries. Such a man formed a partner with Yin Ran to jointly investigate the insurance compensation accident. Qiao Wenjie has an unknown sad past, and the appearance of Ling Ruofei (played by Li Shiyun) made this past surface again.