The film's climax features an action-packed showdown between Arav and Jai, with the Koh-i-Noor hanging in the balance. In the end, Arav manages to pull off the impossible heist, but not without being betrayed by one of his accomplices.
Here's a full story based on the movie:
Their next target is the priceless Koh-i-Noor diamond, currently on display at the Royal Museum in Madrid. However, their plans are foiled by the museum's advanced security system and the interference of a clever police officer, ACP Jai Dixit (Akshay Kumar). Dhoom 2 Moviesda
Jai Dixit, a former cop who was thought to have been killed in the line of duty, has been tracking Arav and his gang for months. He teams up with an intelligent and resourceful Interpol agent, Monica Dogra (Aishwarya Rai Bachchan), to catch the thieves. The film's climax features an action-packed showdown between
The cat-and-mouse game between Arav and Jai leads them to Brazil, where Arav plans to steal the Koh-i-Noor. However, things take a complicated turn when Arav's accomplices, including a skilled hacker, start to get caught. However, their plans are foiled by the museum's
I'm assuming you're referring to the 2006 Indian heist action film "Dhoom 2" starring Akshay Kumar, Abhishek Bachchan, and Aishwarya Rai Bachchan.