Jing Haoran, senior inspector of the Crime Unit.When he was a child, his parents were murdered, and the case became an unsolved case without witnesses or clues. Since then, Haoran has determined to become a police officer and find out the real murderer for his parents.Due to childhood experiences, Haoran fell into a state of long-term insomnia. Haoran used his insomnia time to work concurrently, which was deeply appreciated by his boss.In order to solve the problem of insomnia, Haoran turned to an online insomnia group and met Tan Qianwen in the group.The two later became good friends and formed the band Insomnia.