Young people in Los Angeles are keen on street racing. Here, as long as you have speed, you have everything. In order to crack the recent frequent carjackings by the motorcycle gang, the new police officer Brian (Paul Walker) acts as an undercover agent and breaks into the active motorcycle gang here to collect evidence in order to bring the criminals to justice. Brian quickly wins the appreciation and trust of the motorcycle gang leader Dominic (Vin Diesel) with his superb driving skills, and soon falls in love with Dominic's sister Mia (Jordana Brewster). However, Vince, the second-in-command of the motorcycle gang, is full of hostility towards Brian. It turns out that Vince has always had a crush on Mia, and Brian's arrival threatens his position as the second-in-command. At this time, the members of the motorcycle gang began to suspect that there were spies hidden in them, and Brian's life began to be difficult. Moreover, the longer he contacted Dominic, the deeper their friendship became, and Brian began to be in a dilemma.