After covering for a friend who tried to cheat the casino, Li Xiao Yu gets arrested as the biggest suspect. At this time, his girlfriend Wen Wen gets kidnapped by a gang that engages in human trafficking. Unable to come to the rescue, Li Xiao Yu asks his friend Qiu Yong Bang for help, oblivious to the reality that Qiu Yong Bang is actually working with the kidnappers. Upon learning the truth, Li Xiao Yu becomes an informant for the police and starts on a trail to save his girlfriend. His pursuit leads him to find Qiu Yong Bang aboard a tourist bus that his group has hijacked. Medical surgeon Jian Ni is also on the bus because she was trailing her father Hong Yin He in order to take revenge for her mother.