Ding Dong traveled through the game world, silently guarding Ning Keti's world at the cost of bloodshed. When the secret of the murder is revealed, Ning Keti's disgust pushes her into the abyss. It wasn't until the dagger she blocked penetrated her chest that Ning Keti read Ding Dong's diary and understood the deep love under the paranoid guard. She went against the will of heaven and wanted to break through the world to find her, but found that the system had already laid a dragnet to imprison her in the game cage. In the end, Ning Kedi held his sword against the system, and with the determination to die together, he played a belated song of repentance and redemption at the moment when the code collapsed.