Liang Dawei and Xiao Di found the person who was following dr. Hua while protecting him, so Xiao Di asked Liang Dawei to protect Dr. Hua, and he went to track down the man and took a photo. Xiao Di came back and let Dr. Hua identify the man in the photo, Dr. Hua recognized him at a glance, this person is named Wang Jianwei, is a truck driver, some time ago he went home from the night shift, collided with Wang Jianwei's car on the road, when Wang Jianwei was still carrying his son in the car, his son died in this accident, because Wang Jianwei drove in violation of traffic rules, so Dr. Hua did not have any responsibility, but Wang Jianwei took revenge because of this. Xiao Di thinks that this person must want revenge, so he asks Dr. Hua to find the address of Wang Jianwei's house so that they can understand the situation. Dr. Hua found the address of Wang Jianwei's home according to Xiao Di's words, and Xiao Di and Liang Dawei went to Wang Jianwei's hometown together.
Wang Jianwei's wife received Xiao Di and told them about Wang Jianwei's condition after his son's death, and now Wang Jianwei is like a madman, he repeats his son every day, and also threatens to make Dr. Hua pay for his life. This time, when he left, he also told his wife that he would bring the child back in a few days. Xiao Di listened to Wang Jianwei's wife's words and felt that there must be something wrong with things, on the way back with Liang Dawei, Xiao Di speculated that Wang Jianwei's target was not Dr. Hua but Dr. Hua's son Xiao Dong, so the two rushed to the kindergarten as quickly as possible, but they were one step late, and Wang Jianwei took Xiao Dong one step ahead of them. Xiao Di knew that Xiao Dong would be in danger as long as she was in Wang Jianwei's hands for a second, and she now had to find a way to find Wang Jianwei and Xiao Dong as soon as possible.
Wang Jianwei called Dr. Hua after kidnapping Xiaodong, and he asked Dr. Hua to go to Dongsen Beach alone to wait for him, dr. Hua had no choice but to agree to Wang Jianwei's request, and obediently did not contact Xiao Di and refused to answer their calls. Xiao Di could not contact Dr. Hua, as long as he and Liang Dawei acted separately, they went to Find Wang Jianwei's wife Gui Zhi to further understand the situation, and Liang Dawei went to the hospital to find Liang Dawei. Liang Dawei found him in Dongsen Beach according to the words of Dr. Hua's colleague, Xiao Di and Gui Zhi talked on the phone, she learned that Wang Jianwei took Xiao Dong to the park, so she immediately turned around and went to the park, and informed Liang Dawei.
Xiao Di rushed to the park to find Wang Jianwei, Wang Jianwei prepared to kill Xiao Dong, Xiao Di was injured by Wang Jianwei in order to save the child, Wang Jianwei saw the situation and prepared to escape, but was stopped by Liang Dawei and the police he brought. Liang Dawei found the injured Xiao Di and sent him to the hospital in time. After rescuing Xiao Di finally out of danger, Liang Dawei has always blamed himself, he believes that it is his own poor consideration that made Xiao Di in danger, causing the current situation, he guarded Xiao Di every step. Zhang Yan and Ma Li both came to see Xiao Di after learning the situation, they did not expect Xiao Di to be so seriously injured this time, everyone hoped that Xiao Di could get better quickly, but at this time, Xiao Di had been in a coma.