When Chen Xiao woke up, he found his surroundings strangely unfamiliar. There was only a diary beside him. Chen Xiao thought that this diary might answer his current confusion. He opened the diary, but the contents made him unsure of its authenticity. It was clearly a record of 'himself' committing a crime.

Just as Chen Xiao was about to finish watching, the piercing sound of police sirens downstairs startled him awake, and he couldn't help but start having bad thoughts...