In order to go abroad for further study, Jiang Yan, a graduate student of psychology department, interviewed mental patients according to the requirements of her tutor and finished her graduation thesis. However, she found that Kobayashi, a doctoral student, also got the case from her tutor, and was also vying for the opportunity to go abroad for further study with only one quota. Xiao Lin's special love affair with her mentor forced Jiang Yan to devote himself to her mentor, only to be discovered by her fiance. Jiang Yan killed her fiance by mistake. She buried the body at home, but she always felt that a ghost was floating. Jiang Yan turned to her tutor for help, but Xiao Lin took care of her. What the hell is going on? Almost collapsed, she tried to save herself and find out the truth, but later she found that the real answer was more complicated than she thought. ...

Jiang Yan (played by Song Jia), a graduate student in the Department of Clinical Psychology of Medical College, pretends to be an adult census taker to investigate the mental condition of patient Yang Damin (played by Liu Bo), but she is caught by the other party and has to flee. But later she found out that the doctoral student Kobayashi (played by Asru) also chose this case, and the patient was very cooperative.

This thesis is related to going to Harvard as a special assistant, and Kobayashi (played by Shi Liang), as a tutor, seems to have an affair with him, so he has a good chance of winning. Jiang Yan refused to accept it and found a tutor. The tutor was evasive and seemed to have only a little erotic hint between the lines. In order to win, Jiang Yan had to make a bold decision.

They have sex in the office, but Jiang Yan's fiance Wu Zhi (played by Zhu Hongjia) finds out. They had an argument and scuffled, and Jiang Yan killed her fiance by mistake. In a panic, she called her tutor and asked him to bury the body with her. From then on, she began to spend all day in anxiety, always feeling that the ghost of Wu Zhi was floating around her.

Jiang Yan found out that she was pregnant, and then the tutor asked Xiaolin to take care of her. She didn't want Kobayashi to know that Kobayashi was very scheming, and she always felt that the other party was spying on herself, colluding with her mentor and trying to harm her. What's going on here? Jiang Yan is confused. She was deeply frightened.

I mistakenly thought that Jiang Yan found out that Yang Damin's daughter was not dead, and Yang Damin was not crazy. So, why did the tutor give her this case? Why is it so easy for her to find out that Xiao Lin and she are working on the same case? Jiang Yan found her tutor again, only to find that there was no answer at all, because all this was a game from the beginning!

However, Jiang Yan did not flinch. She tried to save herself. She went to the patient's house again, trying to find clues from the beginning of the game, but found that everything seemed more complicated than she thought.