Deewaanapan [English: Insanity] is a Bollywood movie, released on 16 November 2001. It stars Arjun Rampal and Dia Mirza and is directed by Ashu Trikha. Om Puri and Vinod Khanna have supporting roles.
Suraj Saxena [Arjun Rampal] lives with his father [Om Puri], his mother [Smita Jaykar] and his sister [Amita Nangia] in Dalhousie, a village in the mountains.
One day, he encounters Kiran [Dia Mirza] who has come with a travelling group from Mumbai to spend her vacation there and falls in love instantly. After a toilet break Kiran is separated from her college friends and begs Suraj to get her back on the coach. In a crazy scene Kiran sits a screaming Kiran on his lap as together they hurtle down a snowy valley to get Kiran back on the bus. Kiran then asks Suraj to show her the mountains properly and slowly Kiran also falls in love.
On the day her group is to return home the two lovers agree to meet early in the morning to say goodbye. But then Surajs dad has a heart attack and Suraj has to rush him to the hospital and Kiran is forced to leave without saying farewell. Thankfully Om Puri recovers and on offering the choice to Suraj of the family transferring to Mumbai or Delhi as part of his job Suraj chooses Mumbai making up an excuse that there is a course he wants to enrol on.
Suraj meets her again and they quickly develop a relationship. However, Ranvir Choudhary [Vinod Khanna], opposes their union very much, as Suraj comes from a lower class family while Ranvir himself is the citys powerbroker. He has big dreams for his daughter and no poor boy is going to get in the way. He invites Suraj over to a gathering at his estate and then embarrasses him in front of the creme de la creme of Mumbai. Not only does he embarrass him but he also threatens him. Leave the city or else! However Suraj is crazy [hence the title] for Kiran and he decides he is going to stay and fight for his love.
Ranvir saab is not to pleased so he tries to force Surajs family out of town by banning traders from selling food to the Saxena family and by cutting off their utilities. After Surajs family support their son he has Mr Saxena arrested and paraded along the streets of Mumbai and imprisoned.
Kiran sees the parding of Mr Saxena and learns of the way her dad has been treating Surajs family. She pays the bail for Mr. Saxena and chastises Suraj for not telling her of her dads behaviour.
Ranvir Choudhary, who fears for his daughters and his own reputation if she marries Suraj, sends men to beat up Suraj - who proceeds to beat Ranvirs men up. Kiran stops him before he can kill one of them and shortly afterwards, Mr. Chaudhary appears to take Kiran home. Before he can do so, however, Suraj puts a necklace he has received from Kiran around her neck and announces that, though Mr. Chaudhary can take her with him, she is now his possession due to Hindi marriage rites and that he awaits Mr. Chaudhary sending Kiran back to him along with a mangalsutra.
Then at a college dance performance by Kiran called "Satrangi" she declares her love for Suraj once and for all by setting the score to a backdrop of a mosaic of Suraj that is slowly put together by her backing dancers. This is the last straw for her father as the great and good of Mumbai were all at the event.
Mr. Chaudhary sends a group of his men to Surajs apartment complex, where a fight ensues. Suraj manages to beat the entire group, as well, as their leader Shankar Deshpande [[Sharat Saxena]]. Mr Chaudhary arrives at the scene brandishing a revolver demanding to know where Kiran is and starts to beat up Suraj, until he cannot stand anymore. Suraj informs Mr. Chaudhary that he will either give Kiran to him or kill him with the revolver and places his head against the revolver.
At this juncture Mr. Chaudhary, finally realizing that there is someone who loves his daughter more than himself, gives his own belated blessing to Surajs and Kirans relationship - bowing before Surajs DEEWANAPAN.
* When Suraj and Kiran meet for the first time, he is wearing a grey jacket. Later on, she is wearing the grey jacket without any explanation and gives it to him. He later wants to return it to her, explaining it belongs to her, though he was the first to wear it in the movie.
Source : Deewaanapan Wiki Page