The movie is based on Chetan Bhagat's Novel Half Girlfriend, set in rural Bihar, New Delhi, Patna, and New York, it is the story of a Bihari boy in quest of winning over the girl he loves.
The movie divulges the sentiments and linguistic struggles of a backward rural Bhojpuri-laced Hindi-speaking boy from Bihar as he enrolls himself at the prestigious English-medium St. Stephen�s College, New Delhi, and falls in love with a high class English-speaking rich Delhi girl schooled at Modern School, New Delhi. The girl does not admit the relationship but agrees to be his half girlfriend.
Half Girlfriend divulges into a unique phenomenon, where boys and girls are not clear about their relationship status with each other and journey of the lead characters thereon.