Donghae Lin had a great time at the networking party.When the first ray of sunlight in the morning shone into the room, he was horrified to find that the body of Quan Tianhara was lying next to him, and his memory of last night was completely blank.

This discovery shocked the entire city and attracted the attention of the police.At the same time, members of the UDI (Special Crime Investigation Unit) Nakado and Rokuro were busy dissecting the body of a man who died suddenly.During careful inspection, they unexpectedly discovered that there was some mysterious connection between the man and Kwon Tianhara.

The police quickly regarded the two cases as serial murders. As the only witness at the scene, Dong Hailin naturally became the key suspect.Facing the police's questioning and the pressure of public opinion, Donghailin felt helpless and confused like never before.

At this moment, Mikoto from UDI arrived at the scene.She is not only a good friend of Dong Hailin, but also an expert in forensic science.After carefully observing Gontahara's body, Mikoto discovered some strange signs that may reveal the true cause of Gontahara's death.

In order to clear Dong Hailin's suspicion, Meiqin and the members of UDI launched an in-depth investigation.Not only do they have to face a complicated case, but they also have to race against time, because Dong Hailin may become the next target at any time.During the investigation, they gradually uncovered the secrets between Quan Tianhara and the man who died suddenly, and a huge criminal network began to surface.

As the investigation deepened, Donghailin gradually recalled the clips from last night.Although these memories are fragmentary, they become the key to solving the mystery.Dong Hailin realizes that he may be involved in a more complex conspiracy.

In the end, with the joint efforts of UDI members, the truth came to light.