• Producer : Aditya Chopra( Aditya Yash Chopra)
• Writer : Aditya Chopra( Aditya Yash Chopra)
• Screenwriter- screenplay : Aditya Chopra( Aditya Yash Chopra)
• Editor : Aditya Chopra( Aditya Yash Chopra)
• Dialog Writer : Aditya Chopra( Aditya Yash Chopra)
• Cinematography- Camera Man : Aditya Chopra( Aditya Yash Chopra)
• Composer : Pritam Chakravarty , Julius Packiam
• Lyricist : Julius Packiam
• Actor : Aamir Khan , Abhishek Bachchan , Uday Chopra , Jackie Shroff
• Actress : Katrina Kaif

In the year 1990, "The Great Indian Circus" owned by Iqbal Haroon Khan (Jackie Shroff) in Chicago, Illinois gets closed when he is unable to repay his loan. Young Sahir, his little son, pleads that the two would soon turn the corner. But Iqbal's rejected and commits suicide in front of the heartless bank leader Anderson. Twenty-three years later, Sahir (Aamir Khan) robs various branches of the Western Bank of Chicago. Despite all efforts of law enforcement, the robbery isn't foiled, and he successfully gets away. Officer Victoria (Tabrett Bethell) calls ACP Jai Dixit (Abhishek Bachchan) and his partner (Sub-Inspector) Ali (Uday Chopra), for help in solving the case. Jai baits Sahir into robbing again by making it known he's on the case and that the thief's an amateur. On the other hand, Sahir starts the Great Indian Circus again, which was closed due to Iqbal's death. That is where he appoints Aaliya (Katrina Kaif), a new acrobat in his circus. Sahir poses as an informant for Jai, and manages to gather information on the bank while giving Jai a lead to follow. Eventually, Sahir robs the bank and escapes, but Jai and Ali follow him. Jai, while hanging on a helicopter ladder, manages to shoot Sahir on the left shoulder before he disappears. Sahir has a big premiere of The Great Indian Circus, with his female lead acrobat, Aaliya, involving a trick with him disappearing in one place and showing up in another. The show is a success, but afterwards, Jai, Ali, and the police surround him, knowing he's the thief. Jai says the proof will be the gunshot wound, but when Sahir is examined, there is no evidence anywhere on his body. It is then revealed that Sahir has an autistic twin brother, Samar, who helps him pull off his trick, helps him in planning and pulling of the robberies, and he also shows it was Samar who sustained the wound. Jai is fired from the case, but is encouraged by Ali to prove Sahir's guilt. Jai eventually finds out about Samar, and sets about finding a way to corner Sahir. Samar, being mentally challenged, is kept in seclusion by Sahir. However, he allows Samar outdoors once a week, and Jai manages to befriend him during this time in order to perform his plan. Samar has fallen in love with Aaliya after performing with her in the circus, but cannot express it. This leads to a rift between the brothers. Jai tries to take advantage of this, but Sahir finds out and thwarts Jai's plan to stop them. When Sahir comes in the disguise of Samar, Jai reveals his true identity and, assuming him to be Samar, tells him to surrender since he can give them justice. When Sahir reveals himself, he ties Jai to the track of a roller coaster. He switches the roller coaster on, but Ali arrives in time to save him from being crushed. He decides the only way to catch the brothers is in the act of robbing. Sahir and Samar pull off their final bank heist, and escape. However, the following day, Jai manages to corner them as they're making their way out of town. Samar is hesitant to run when Aaliya shows up, begging him to stop. Sahir surrenders to Jai, asking him to spare Samar. Jai agrees, but right after, Sahir attempts to jump off the dam. Samar grabs Sahir's hand, refusing to let him go. Sahir begs Samar otherwise, saying he can live freely with Aaliya. But Samar says that both of them are born together and should die together. Soon Samar loses his grip, and the two of them fall into the abyss, but smiling at each other. Western Bank of Chicago is shut down as a result of the heists, while Aaliya is shown having taken over The Great Indian Circus and still performing for it.

• Track 1 : Malang ( मलंग )
• Track 2 : Kamli ( कमली )
• Track 3 : Tu Hi Junoon" ( तू ही जूनून" )
• Track 4 : Dhoom Machale Dhoom ( धूम मचले धूम )
• Track 5 : Bande Hain Hum Uske ( बंदे हैं हम उसके )
• Track 6 : Dhoom Tap ( धूम तप )
• Track 7 : Dhoom : 3 Overture ( धूम : ३ ओवरचर )
• Track 8 : Dhoom Machale Dhoom (Arabic) ( धूम मचाले धूम (अरबी) )
• Track 9 : Dhoom Machale Dhoom (Spanish) ( धूम मचाले धूम (स्पेनिश) )