In the film, Charlie assembles a team of non-dancers to take part in a dance competition at a hotel in Dubai in a quest to pull of a diamond heist.

Happy New Year was released on Diwali 2014 in Dubai and India, with dubbed versions in Tamil and Telugu languages.

At the 60th Filmfare Awards, Happy New Year received 2 nominations – Best Supporting Actor (Bachchan) and Best Female Playback Singer (Shreya Ghoshal for "Manwa Laage").

Charlie learns that some diamonds owned by Grover will be moved on Christmas Eve to the most secure safe in the world, Shalimar in Dubai.

He assembles a team that includes hard-of-hearing strongman and explosives expert Jagmohan "Jag" Prakash, seizure-prone safecracker Tehamton "Tammy" Irani, Jag's nephew and master hacker Rohan Singh, and Nandu Bhide, who looks identical to Grover's son Vicky.

After the dance is done the plan commences where Jag and Nandu go to the lift to trap Vicky but they find out that the diamonds will be coming on New Years Eve instead of Christmas.

As the group prepares to flee by boat, Rohan tells them that Mohini has refused to join them, planning instead to dance in the finals for India.

When the diamonds are found missing and Team India fails to appear onstage, Grover accuses them of being the thieves; however, the entire group joins Mohini, convincing Grover's associates and the police that he stole his own diamonds, which were contracted to be sold after WDC.

Plans for the film began as far back as 2005 with an ensemble cast of Amitabh Bachchan, Shah Rukh Khan, Akshay Kumar, Juhi Chawla, Manisha Koirala, Ameesha Patel, Priyanka Chopra, Raveena Tandon and Zayed Khan.

In December 2012, media reported that the makers had approached Priyanka Chopra for the role, who was their first choice for the film after the script was revamped.

Though reported as minor at first, he suffered a fractured shoulder[21] and a torn left knee patella, being advised rest for a while.

[23] For promotion, digitally personalized posters written in cast members' handwriting were made available to social media users.

[24] The team of Shahrukh Khan, Deepika Padukone, Boman Irani, Sonu Sood and Vivaan Shah went to the set of the famous Indian television show Tarak Mehta Ka Ooltah Chashma (TMKOC) for the promotion of their movie.

Starting from 19 September in Houston, it took place in New Jersey, Washington, Toronto, Chicago, Vancouver and San Jose.

It was made in collaboration with the production company and Gameshastra India, an Indian game art outsourcing studio.

The full soundtrack was launched on 24 September 2014 at an highly advertised event held in Film City, Mumbai, which was also streamed live on the production company's official YouTube channel.

[34][35] After the album was launched, promotional videos of the songs "Lovely", "Nonsense Ki Night" and "Satakli" were also released.

Happy New Year set a record by collecting ₹44.99 crore, making it the first Bollywood film to reach the figure in a single day.

The record was broken by the 2018 Diwali release Thugs of Hindostan starring Aamir Khan, Amitabh Bachchan, Katrina Kaif and Fatima Sana Shaikh which collected 52.25 crore on Day 1.

[45] The film grossed ₹ 2.45 billion worldwide in its first week which was the fourth highest total ever behind Dhoom 3, Kick and Chennai Express.

[64] The film had an all-time record opening in the Gulf, Nepal, Sri Lanka, South Africa, Malaysia, Thailand, Hong Kong and Germany.

Rajeev Masand of CNN-IBN gave 2.5 stars out of 5, commenting "You'll find yourself chuckling and cringing alternately while watching Happy New Year, in which director Farah Khan skillfully sets up a heist plot against an international dance competition scenario.

Farah takes the framework of the traditional heist movie and bungs in revenge, melodrama, comedy, romance, countless dazzling dance sequences and, as a climactic flourish, a dose of patriotism.

"[73] Saurabh Gupta of Indian Express rated the film 2 out of 5 stars calling it a "Mera Bharat Mahan sentiments" type movie, and a cross between an Ocean's 11/12 and "Flashdance".

[76] Mihir Fadnavis of First Post said that, "the movie looks and feels like a home video project that was intended for appreciation by precisely two people in the entire universe – Farah and Shah Rukh Khan" and appears to be "Ocean's 11 rewritten by baboons".

[79] Lisa Tsering of The Hollywood Reporter reviewed film as, "an ambitious musical, a love story and an Ocean's 11-style crime caper".