Build a movie plot around this: In the alternate ending who is found to be a mole? Lau
Infernal Affairs focuses on a police officer named Chen Wing-yan, who goes undercover into a triad, and a triad member Lau Kin-ming, who infiltrates the Hong Kong Police Force. Each mole has been planted by the rival organisation to gain an advantage in intelligence over the other side. The more the moles become involved in their undercover lives, the more issues they have to cope with.The prologue opens with the introduction of triad boss Hon Sam, who sends a number of young gangsters to the police academy as moles, among whom include a young Lau. Concurrently, a young Chen joins the police force but is seemingly expelled from the academy even though he manages to impress Superintendent Wong Chi-shing. In reality, Chen has become an undercover agent reporting only to Wong. Over the course of ten years, Chen experiences great stress from his undercover work while Lau quickly rises through the ranks in the police department. The film begins with a meeting between Chen and Lau in a hi-fi store without either of them knowing the other's identity.Wong and his team interrupt a deal between Hon Sam and a Thai cocaine dealer after receiving a tip-off from Chen using Morse code. However, Lau alerts Hon, giving him enough time to order his minions to dispose of the cocaine, eliminating solid evidence of the drug deal. After the incident, Wong and Hon are both aware that they each have a mole within their respective organisations, placing them in a race against time to root out the other mole. Later, Chen sees Hon conversing with Lau at a cinema but does not see Lau's face clearly; he ultimately fails to capture Lau. By this time, both Chen and Lau are struggling with their double identities Chen starts losing faith in himself as a cop after being a gangster for ten years; Lau becomes more accustomed to the life of a police officer and he wants to erase his criminal background.At their next meeting, Wong intends to pull Chen out of undercover work for fear of his safety. They are unaware that Lau has his...