Prashant and Jasbir are siblings. They were separated at childhood when their parents decided to part ways. Prashant remains with his mother and Jasbir -- with her father and his new wife. Years later, Prashant is in search of his sister. To his complete shock he finds out that she is located in Nepal and is a part of a group of young hippies, which includes unemployed drug addicts who spend most of their time at parties. She calls herself Janice and everything she does is in order to forget her past. Hare Rama Hare Krishna is one of the most famous films of Dev Anand, and its popularity comes mainly because of its rather racy presentation of the hippie movement and the modern culture in general. But the film as a film does not really work that much. The concept is very interesting but the script is quite poor and very often it turns into a big melodramatic mess. Anand's direction is quite faulty (well, like in most of his directorial ventures). I never understood the purpose of the film apart from its innovative theme and Anand's willingness to break new ground.
Where acting goes, the movie belongs to Zeenat Aman. With this film, Aman introduced a new heroine to Hindi cinema, characterised by her westernised nature and modern persona. This image was only consolidated by her proceeding films. This role is as bold as the film itself or even more, and Aman does full justice to it. She looks really beautiful and even within the rather messy proceedings manages to create a conflicted and troubled young lady who you end up feeling for. This is a very good debut and sadly she never managed to get many great chances in her career. Dev Anand is terribly miscast as he looks too old for his part. His Prashant is supposed to be 24-25 years old, but Anand himself is at his late forties, which is a total joke. Mumtaz is there to look pretty, and she definitely does. The music is excellent - well, after all it's by master R.D Burman. Asha Bhosle's fantastic rendition of "Dumm Maaro Dumm" is obviously the most memorable. Clearly, an interesting concept, "Dumm Maaro Dumm" and the presence of Zeenat Aman pretty much sum up Hare Rama Hare Krishna.