Story Line – A voice-over by Inspector Robert D’Costa “RD” (Anil Kapoor) introduces the four main characters. Ranvir “Ronny” Singh (Saif Ali Khan) is a successful and powerful businessman who runs a ranch house Stallions in Durban and fixed many horse races using finest breed of Horses. His younger brother Rajiv Singh (Akshaye Khanna) is an alcoholic. Ronny is dating an upcoming model Sonia Martin (Bipasha Basu), while his personal assistant Sophia (Katrina Kaif) appears to be secretly in love with him. Ronny is also involved in a competition with his business rival Kabir Ahuja (Dalip Tahil), who is also a horse race fixer.
The film opens with a murder plot involving a car accident that Ronny narrowly survives. Ronny later kills his unfaithful jockey, who had been bribed by Kabir, and destroys Kabir when the latter offers to buy his company, which is in debt.
Rajiv drunkenly confesses to Ronny that he likes Sonia and would quit drinking for her. Ronny stops dating her and Rajiv and Sonia begin dating until, in a twist, Rajiv reveals that he knows of Sonia’s shady past and plans to use her. His father had secured huge life insurance policies on each of the sons and he wants to kill Ronny and inherit $100 million in insurance payments. Sonia agrees to help in exchange for $20 million.
They pretend to get married; as per Rajiv’s instructions, Sonia seduces Ronny, who confesses he loved her all along. Rajiv’s plan is to threaten suicide, in response to Sonia and Ronny’s affair by leaping off a tall building and get Sonia to push Ronny off. It turns out Ronny was aware of the plan as Sonia had been keeping him updated, having always been in league with him. They scheme to kill Rajiv.
Sonia double-crosses Ronny and pushes him off instead, saying she loved him, but the money was more important. As RD investigates the death, Sophia reveals that she was married to Ronny, leaving Sonia shocked since Sophia is now the heir to the insurance money. In another twist, Sophia was in on the plan too and is Rajiv’s secret collaborator. Rajiv plans to bump off Sonia after he and Sophia get the money. RD figures out that Sophia had faked her marriage with Ronny and he had been tricked into signing the marriage certificate. RD confronts Rajiv and agrees to remain silent in exchange for $25 million.
Rajiv hires the same hitman who had attempted to murder Ronny in the beginning to kill Sonia, revealing that he had been behind the first murder attempt too. However, Ronny reappears and rescues her, killing the hitman.Ronny confronts Rajiv and Sophia. He had overheard Rajiv discussing the failed murder attempt with the hitman and had been playing along the whole time so he could get the insurance money from his own faked death along with the insurance money from Rajiv’s death. He allows Rajiv one last chance to win by agreeing to a car race. Ronny and Sonia show up in a yellow Toyota Supra and Rajiv and Sophia in a blue Nissan Skyline. When Rajiv protests, he switches cars with Ronny. Rajiv anticipated the switch and had destroyed the Nissan’s brakes. In the middle of the race, Ronny tells Rajiv that he planted a bomb in his car and it will detonate if Rajiv slows below 100 kmph.
As the race continues, the two cars dodge obstacles (a boat hitched to a car, a group of cyclists, two trucks in a line, etc.). As they reach a parking lot, Rajiv attempts to cross a ramp, in order to overtake Ronny. This causes the Supra to crash into a caravan, topple over and knock into a petroleum tank, killing Rajiv and Sophia. After Ronny and Sonia narrowly escape death, Ronny confesses to Sonia that there was no bomb in the car and Rajiv killed himself. He also expresses his grief in realising to what extent did Rajiv go, even destroying the brakes, to deceive and kill the former.
In the end, Ronny collects the insurance money from Rajiv and Sophia’s death, along with the money from his own ‘death’. He attempts to flee the city with Sonia but RD stops them. The two are revealed to be childhood friends, and RD was working with Ronny all along, in exchange for more money. Ronny gives RD a briefcase with a bomb. The bomb does not detonate, and Ronny explains that it was to prevent RD from killing Ronny and taking all the money.
Cast
Anil Kapoor as Inspector Robert D’Costa, a.k.a. RD, Ranvir’s childhood friend
Saif Ali Khan as Ranvir “Ronny” Singh, Rajiv’s elder brother, a powerful businessman
Akshaye Khanna as Rajiv Singh, Ranvir’s younger brother
Bipasha Basu as Sonia Ranvir Singh, a supermodel and Ranvir’s love interest, later wife
Katrina Kaif as Sophia Singh, Ranvir’s secretary and Rajiv’s love interest
Sameera Reddy as Mini, RD’s assistant
Dalip Tahil as Kabir Ahuja, Ranvir’s rival
Kiku Sharda as Sam, Ranvir’s assistant
Johnny Lever as Max, marriage bureau chief (cameo appearance)
Gurpreet Ghuggi as police officer (cameo appearance)