Lin Ling and Qu Youyou were childhood sweethearts. Qu Youyou was a generous little girl who was very popular when she was young, while Lin Ling was unhappy and did not play with her friends. Only Qu Youyou would take the trouble to call Lin Ling, Lin Ling... Every day. They lived in the small town of Guanshan. Later, Lin Ling moved out of the town and the two lost contact. By chance, Lin Ling learned about Qu Youyou's college entrance examination aspirations, chose to apply for the same school, and had an encounter at the school. Unexpectedly, Qu Youyou did not recognize him and became sensitive and reserved. After many investigations, he learned that Qu Youyou had experienced something before, which caused a drastic change in his temperament. In order to understand what Qu Youyou went through after he left, Lin Ling developed the game "Core" and tried to find Qu Youyou's past in the game. Unexpectedly, using immature technology eventually led to system problems and loss of control. What kind of world will they find in the game and what will they experience?
