Liu Han and Chen Bin were originally an enviable young couple. In the game developed by Chen Bin, Liu Han entered the game life with a play mentality. From then on, she couldn't extricate herself and it was difficult to get out of the game world. When her boyfriend's persuasion failed, the two finally chose to separate for a while.
When Chen Bin was in a different place, because he missed Liu Han too much, he also threw himself into the game. In order to make the virtual world more real, he wrote a program so that he and Liu Han entered the game. They could not enter with modern thoughts. They only knew who they were, where they came from, and how they got out of the game. They knew nothing else. In this way, two people in the same virtual world knew each other and could only fall in love and kill each other.