The fourth instalment of the car chase laden action franchise starring Vin Diesel. When a crime brings them both back to LA , fugitive ex-con Dominic Toretto (Diesel) reignites his feud with agent Brian O'Connor (Paul Walker). But as the two men find themselves facing a common enemy in the form of a major heroin importer, they are forced to give in to an uncertain new trust in order to infiltrate his operation and out-manoeuvre him.