If you have a movie that needs a lot of drama and action with a tough guy in the main role, then you're talking about a really closed group of actors you want to see there. Amongst them is Vin Diesel. He is one of the main characters in this action loaded movie. He plays a hardcore and massive Dominic Toretto, who is a mechanic during the day, does some car fixing and upgrading, but is a totally different man at night. He loves races and high speed. At one point, LAPD gets pretty suspicious after getting the information about specific car types involved in lots of on the road robberies. They place one of their agents Brian O'Conner (Paul Walker) to infiltrate into his gang and bring them all down in order to stop the whole robbery wave. Brian manages to get his attention during one midnight race, and manages to infiltrate his gang, but instead of bringing him and his whole "family" to the police, he gets deeper and deeper. Ultimately, Brian joins the crew and goes "dark". He succeeds to understand their way of life and becomes one of them. But, it is not too long before they find out that he is a cop and he has lost their trust in the moment. Now, when the police is after them both, he must prove Dominic that he really is loyal to him.