Neel (Jimmy Sheirgill), a brilliant student at Columbia University and the pretty Maya (Nisha Rawal) the love of his life, are on the verge of starting a new life together in New York. Sunny Malhotra (Rajpal Yadav) is Neel's roommate, teammate and conscience. Academically challenged and a compulsive flirt, he gets involved in a series of hilarious situations with his American love interest Tina (Sarah Thomas).
Just when life seems perfect, Neel accepts a career opportunity that requires him to go to India to set up a call centre business. Much against Maya's wishes Neel travels to India with Sunny.
Tanvi (Monishka) is a young executive who goes out of her way to help Neel and his team in India. Attractive & aggressive she is instantly attracted to Neel and tries her best to win his heart. Neel being deeply in love with Maya rejects Tanvi. Now seeking revenge, Tanvi creates a trap which leads Neel in to deep trouble professionally and personally. Will Tanvi succeed in her plans? Will Neel win Maya's heart again? Will Neel succeed in clearing his name from all the accusations?
Hastey Hastey is a youthful, musical, romantic comedy with a twist in the tale.