Young people in Los Angeles are passionate about street racing. Here, as long as you have speed, you have everything. Newly-recruited police officer Bryan (Paul Walker) acts as an undercover agent in order to crack the recent frequent biker carjackings, infiltrating the active biker gangs here to collect evidence in order to bring the criminals to justice. Bryan quickly wins the admiration and trust of biker boss Dominica (Van Diesel Vin Diesel) with his superb driving skills, and quickly falls in love with Dominica's sister Mia (Jordana Brewster). However, Vince, the second-in-command of the biker gang, is hostile to Bryan. It turns out that Vince has always had a crush on Mia, and Bryan's arrival threatens his second-in-command status. At this time, members of the biker gang began to suspect that they had spies within them, and Brian's life began to have a difficult time. And the longer he spent time with Dominica, the deeper their friendship became, and Bryan became in a dilemma.