Raj Malhotra lives with his elder brother Rohit, his sister-in-law Kiran, and his niece. After an accident fractures his leg, he is unable to walk for some time, and for psychological reasons, he cannot walk even after the fracture heals. When the Malhotras move to Dehradun, Raj befriends his family's new neighbour, the tomboy Kajal, as both share a common passion for aeroplanes. With Kajal's encouragement, Raj regains the ability to walk. Years later, the two continue to be close friends, and everyone expects them to marry soon. Raj secretly loves Kajal and is waiting for the right time to propose to her, but she sees him only as her best friend.

Raj is recruited by the Indian Air Force and spends a year and a half in training. After this is over, he rushes to Kajal to propose to her, only to discover that she is in love with multimillionaire businessman, Karan Singhania. Raj still does not reveal his true feelings to Kajal, telling her that Karan is the best life partner for her. Kajal and Karan marry; during the reception party, Kajal learns of Raj's feelings for her. Hurt by the fact that she did not recognise Raj's feelings for her despite being his best friend, Kajal asks him to move on with his life. The Malhotras move to Nainital, and Raj relocates to Cape Town, South Africa for further training.

During a visit to a club, Raj meets the vivacious and fun-loving Jiya. She falls in love with Raj because of his clean personality, but he is unable to forget Kajal. After completing his training, Raj returns to India where he finds that Jiya has already arrived and is living as a paying guest with his family. Jiya makes several attempts to impress Raj, but he still does not fall for her. During Karva Chauth, Jiya performs the rituals that a wife typically does for a husband, but Raj becomes angry and asks Jiya to leave. After Raj's family reveals that they had hoped Raj would marry Jiya, he finally gives in and decides to marry her and move on with his life.

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