On a quiet morning, Qiangxian, who was on vacation, was woken up by a hurried phone call. It was from Lishou.He was told that Lu Lingcai was dead. There were red paint and obvious body spots on his body, indicating that he had been dead for more than ten hours.Qiangxian rushed to the scene immediately, and the scene before her was shocking.

Teaching assistant Quan Doujun claimed that he returned to the Dokdo Examination Center in Gangha-dong last night to rest. After arriving at the venue to put down his meal at 8 o'clock this morning, he found that the teacher did not answer the phone, so he ran to his house, but no one opened the door.On the way back, he unfortunately encountered a car accident and did not arrive at the scene until after ten o'clock.Lishou suspects that Doujun is the murderer, but things don't seem to be that simple.

Li Huating, director of Thought Art Gallery, revealed that someone broke into Lingcai's studio a week ago and poured red paint on the painting, but Lingcai chose to let him go.The monitor was re-constructed last night, so there is no video record at that time.This adds to the complexity of the case.

Qiangxian and Lishou went to Lingcai's house to find his wife Zhu Hualing.Faced with the news of her husband's death, Hua Ling did not show too much surprise.She revealed that she and her boyfriend Pei Jinqiao stayed together until two in the morning last night.However, Zhunyong's investigation revealed that Jin Qiao had a history of seven frauds, and the box where the two stayed in did not have a monitor, making Jin Qiao one of the suspects.

During the investigation, Jingli found the surveillance video at the entrance of the art museum.The video shows that a woman wearing a scarf broke into the studio on the night of the incident.At the same time, Qiangxian's girlfriend Chu Xi also came to see him, so he got a short vacation.

Rishou moved opposite Qiangxian's house, and Li's mother Gao Meishu, the commander-in-chief, also came to visit Rishou's house.Facing the graffiti of his childhood, Rishou couldn't help but recall the time when he lived here with his mother.The next day, Lishou discovered that Qiangxian also lived here, and there was something wrong with her car.So, Lishou took her to the art museum.

During the investigation, Doujun took out the footage taken that day, in which Lingcai and Hua Ling were discussing the paintings in the main exhibition.Suddenly, a woman breaks in and throws paint, claiming that Ling is the murderer.Qiangxian and Lishou immediately went to the steam room to find the woman Wu Jingshun.Jingshun revealed that Lingcai stole her daughter Yishan's painting, and Yishan wanted to sue her, but no one believed her.Instead, Lingcai sued Yishan.A year ago, Yishan passed away. After Jingshun learned that Lingcai was going to hold an art exhibition, he angrily ran to throw paint.

The serious crime team investigated separately. They believed that Hua Ling and her boyfriend conspired to kill Ling Cai and put the blame on Jingshun.However, Hands-on bought the destroyed painting and discovered a mouse when he returned home.He asked Qiangxian to help him deal with it, and at the same time revealed the secret that his mother passed away in a car accident when he was seven years old, and he later learned that he was the son of the chairman of Hanshui Group.

Qiangxian launched an investigation into Hua Ling, but Hua Ling claimed that Dou Jun was more suspicious.It turned out that Doujun had received sponsorship from the Artist Foundation and was planning to study abroad.However, Lingcai accused Doujun of plagiarizing his work, causing his study abroad plan to be cancelled.

During further investigation, Jingliang discovered that the silk scarf on the second-hand market had been bought by Doujun.When Ryushou was studying the destroyed painting, he found that Doujun's signature had been covered up.He went to ask Dou Joon, but was knocked unconscious by Dou Joon.