Released in 2013, "Chennai Express" is a Bollywood action-comedy film directed by Rohit Shetty and produced by Karan Johar's Dharma Productions. The movie stars Shah Rukh Khan, Deepika Padukone, and Sathyaraj in pivotal roles. The film's blend of action, comedy, and romance, coupled with its cultural nuances, made it a massive hit not only in India but also globally.

The story revolves around Rahul (played by Shah Rukh Khan), a wealthy businessman who falls in love with a beautiful woman, Meera (played by Deepika Padukone), on a train journey. However, their love story takes a dramatic turn when they get entangled in a series of misadventures involving a local don, Velan (played by Sathyaraj), and his men.

"Chennai Express" received mixed reviews from critics but performed exceptionally well at the box office. The film grossed over ₹423 crores (US$62 million) worldwide, making it one of the highest-grossing Bollywood films of 2013. The movie's success can be attributed to its engaging storyline, impressive action sequences, and the on-screen chemistry between Shah Rukh Khan and Deepika Padukone.

The film's impact extends beyond its commercial success. "Chennai Express" is often credited with popularizing the "masala film" genre, which combines multiple elements like action, comedy, romance, and drama. The movie's influence can be seen in many subsequent Bollywood films that have followed a similar narrative structure.

The film's title, "Chennai Express," refers to the train that becomes a significant part of the story. Chennai, being a major city in southern India, adds a unique cultural flavor to the narrative. The movie seamlessly weaves together elements of Indian culture, traditions, and values, making it relatable to a wide audience.