Brahmachari (Shammi Kapoor), an orphan with no identity, takes care of many orphans in his home. Being poor, it is hard for him to take care of their every need.
One day he saves a young woman Sheetal (Rajshree) from committing suicide. She's in love with Ravi Khanna (Pran) who is promiscuous. Brahmachari promises to unite her with Ravi in return for money. Day and night he works on her appearance to make Ravi like her, but Brahmachari falls in love with her along the way. When Ravi proposes to Sheetal, she realises she loves Brahmachari. Ravi, however, brings in pressure on Brahmachari in terms of forfeiture of the mortgage on Brahmachari's house, due to non-repayment of loans. Ravi convinces Brahmachari into giving up Sheetal by promising to repay the mortgage dues in exchange, to which Brahmachari reluctantly agrees. In order to convince Sheetal, Brahmachari pretends to be romantically involved with Rupa. However, when Rupa tries to leave her newborn child at Brahmachari's house, Brahmachari finds out that the child's father is Ravi. He also gets hold of love letters written by Ravi to Rupa, which he intends to use to convince Ravi to marry Rupa. Ravi however doesn't relent and instead orders the kidnapping of Brahmachari's orphans. A fight ensues and the children are rescued. A repentant Ravi apologizes to Brahmachari and agrees to marry Rupa. Brahmachari and Sheetal get married and along with the children, set off on a road trip in Brahmachari's car.
Music scholar and film expert Rajesh Subramanian opines that the song "Aajkal Tere Mere Pyar Ke Charche" was a rejected tune, which a depressed Jaikishan played to Shammi Kapoor at Hotel Gay Lord. Kapoor found the tune very catchy and suggested to director Bhappie Soni to include the song in Brahmachari. The song became one of the highlights of the film. Also the song "Aajkal Tere Mere Pyaar Ke Charche" , is usually thought to be sung by Lata Mangeshkar but it was in fact sung by Suman Kalyanpur. (The confusion results from the fact that the quality of Suman Kalyanpur's voice is similar to Lata Mangeshkar's at times).