The police find out that Li Shi Qing and Xiao He Yun were investigating the bus driver. The police find out the motive for the explosion and the result is fast. They keep wondering about the source of information and their motive. Li Shi Qing asks the police officer how to stop a bomb on the bus. This time they get the police involved immediately, however the bus doesn't stop. 

Wang Xing De's wife makes him feel guilty about not answering his daughter's phone call. Wang Xing De gets hired to drive a bus and he wants to drive route 45. His wife creates a bomb. Li Shi Qing tries to find out what happened to Wang Xing De's daughter. They find a witness to the accident five years ago.