3 idiot

3 Idiots is a 2009 Indian coming of age comedy-drama film co-written, edited, and directed by Rajkumar Hirani and produced by Vidhu Vinod Chopra. Abhijat Joshi wrote the screenplay. It was inspired by the novel Five Point Someone by Chetan Bhagat. The film stars Aamir Khan, Kareena Kapoor, R. Madhavan, Sharman Joshi, Omi Vaidya, Parikshit Sahni, and Boman Irani.
Upon release, the film was the highest-grossing film in its opening weekend in India and had the highest opening day collections for an Indian film up until that point. It also held the record for the highest net collections in the first week for a Bollywood film. It also became one of the few Indian films to become successful at the time in East Asian markets such as China, eventually bringing its overseas total to more than US$65 million at the time—the highest-grossing Bollywood film of all time in overseas markets, before being overtaken by Chennai Express in 2013.
The film is distinctive for featuring real inventions by little-known people in India's backyards. The brains behind the innovations were Remya Jose, a student from Kerala, who created the pedal operated washing-machine; Mohammad Idris, a barber from Hasanpur Kalan in Meerut district in Uttar Pradesh, who invented a bicycle-powered horse clipper; and Jahangir Painter, a painter from Maharashtra, who made the scooter-powered flour mill. The subtitled version of the film grew popular in South Asia, China, Malaysia, Singapore, Philippines, South Korea, and the United States.
This film was remade in Tamil as Nanban (2012) which also received critical praise and commercial success. A Telugu remake was planned despite Nanban having a Telugu dubbed version titled Snehitudu. 3 Idiotas, a Mexican remake, also was released in 2017.

Plot

Farhan Qureshi and Raju Rastogi are students and roommates at the prestigious Imperial College of Engineering (ICE). Farhan has a secret passion to be a photographer, but studies engineering in fear of his father, whereas Raju chooses engineering to support his family, but has poor grades because he fears the consequences on his family of failing. Their third roommate and friend, Ranchoddas "Rancho" Chanchad is a highly talented and eccentric inventor. After giving unorthodox answers in class, Rancho comes into conflict with the college's director, Viru "Virus" Sahastrabuddhe, whose traditional and strict philosophies on education contrast sharply with Rancho's carefree love of learning. Meanwhile, Chatur Ramalingam, an arrogant Ugandan-born Tamil student, is highly obsessed with coming first in the exams and either reads a lot, or distracts students before exams to come first. Rancho decides to teach him a lesson, and ultimately makes him embarrass himself on teachers day. Chatur holds a bet that ten years later, they would see who is more successful. Rancho quickly falls in love with Pia, Viru's younger daughter, a medical student, and always scores the highest marks out of his class, much to the dismay of Viru. One night, the three friends drunkenly break into the Sahastrabuddhe household to allow Rancho to profess his love to Pia. After discovering their antics, Viru threatens to expel Raju unless he writes a letter implicating Rancho in the break-in. Unwilling to betray Rancho or disappoint his family, Raju unsuccessfully attempts suicide by jumping. With intensive care and support from his friends, Raju recovers in time for a corporate job interview. Meanwhile, Rancho and Pia post Farhan's letter to his favorite photographer, who offers him a position as assistant. Farhan still fears his father's rejection, but after urging from Rancho, he communicates his dream to his father, who gives his acceptance.
Frustrated by Rancho's influence on Raju, Viru makes the final exams so difficult that he can't pass. Pia gives Viru's spare office keys to Rancho to enable him to get the exam papers, but Viru discovers the trio and expels them. However, when Viru's pregnant elder daughter Mona goes into labour during a heavy storm that cuts off all power and traffic, and Rancho uses his engineering knowledge to deliver the baby, A grateful Virus finally acknowledges Rancho as an extraordinary student, allowing the three to graduate. Unexpectedly, Rancho disappears shortly after the convocation.
Ten years later, Farhan is a successful wildlife photographer, Raju is settled in a comfortable lifestyle with a corporate job and wife, and Chatur is vice president of a reputed corporation in the United States. None of them have heard from Rancho since graduation. Farhan is boarding a flight, when he suddenly receives a call from Chatur claiming that he has found Rancho. In order to exit the plane, Farhan causes an emergency landing by faking a heart attack. On the way to the campus, he picks up Raju and meets Chatur at the ICE campus only to find that Rancho is not there. Chatur shows off pictures of his property in America, and reveals that Rancho is in Shimla.
Arriving at Shimla, they meet a man who turns out to be the real Ranchoddas Chanchad. From him, they learn that the Rancho they knew was actually "Chhote", an orphaned servant to the Chanchad family. Ranchodas' father arranged for Chhote to attend ICE in his son's name, so that his son could take credit for the degree. Ranchoddas provides Chhote's address in Ladakh, where he is a school teacher. On the way, in Manali, they also rescue Pia from her arranged wedding so that she can marry Rancho.
Upon arrival in Ladakh, the four find the village school, witnessing young students' inventions that resemble Rancho's own college projects. Raju, Farhan, and Pia then happily reunite with Rancho. Assuming Rancho to be a mere school teacher, Chatur insults Rancho, and asks him to sign a statement that he is the less successful one. Without comment, Rancho does so.
As Chatur walks away in triumph, "Rancho" reveals himself to be Phunsukh Wangdu, an inventor with over 400 patents, with whom Chatur seeks a contract. A horrified Chatur accepts his defeat and begs him to sign the contract while Pia and the three friends run laughing.