Prem [Ranbir Kapoor] is a happy go lucky person who is resides in his small town and runs "Happy Club" - a club which aims at making people happy. A case of mistaken identity leads Prem to kidnap Jenny [Katrina Kaif]. He is immediately besotted with Jenny and tries to impress her in numerous ways. Jenny is a sweet and simple girl, who was adopted and brought up by indifferent and uncaring parents. Love for Jenny makes Prem turn over a new leaf. From hardly working vagabond Prem begins working hard to earn money. For him Jennys happiness becomes everything in life. As for Jenny, she is in love with her college friend Rahul [Upen Patel]. Prem is heartbroken but still loves her and for sake of her happiness he plans get her together with Rahul. When Jenny finally meets Rahul, she realizes that she had made a mistake and she really loves Prem. In the end she is united with Prem and marries him as she realizes she loves him and had only liked Rahul.

Soundtrack

[http://www.bollywoodhungama.com/movies/musicreview/13866/index.html link]| | Last album = | This album = | Next album = }}

Box office

= The film grossed a net take of about Rs. 63.18 crore in its theatrical run and is the third highest grossing film of 2009 behind 3 Idiots and Love Aaj Kal.

Tracklist

=

Track	Song	Artist[s]
01	Prem Ki Naaiyyaan	Neeraj Shridhar
02	Aa Jaao	Javed Ali
03	Tera Hone Laga Hoon	Atif Aslam & Alisha Chinoy
04	Follow Me [Dharti Hila De]	Hard Kaur
05	O By God	Mika Singh & Sunidhi Chauhan
06	Jab Pyaar Hota Hai [Main Tera Dhadkan]	KK & Sunidhi Chauhan
07	Tu Jaane Na - Unplugged	Kailash Kher
08	Tu Jaane Na	Atif Aslam
09	Prem Ki Naaiyyaan - Remix	Neeraj Shridhar & Suzanne
10	Tu Jaane Na [Kaise Batayein] - Reprise Version	Soham Chakroborty
11	Jab Pyaar Hota Hai [Main Tera Dhadkan] - Remix	KK & Sunidhi Chauhan
12	Tera Hone Laga - Remix	Atif Aslam, Alisha Chinoy
13	Aa Jao [Remix]	Javed Ali

Reception

= The soundtrack received generally favorable reviews from critics. Samir Dave of Planet Bollywood gave it a rating of 7.5/10 and said, "If you are looking for an enjoyable potpourri of different musical styles, and melody, then you will love what Pritam has served up for, "Ajab Prem Ki Ghazab Kahani". It deserves to be at the top of the charts". Joginder Tuteja of Bollywood Hungama rated it 3.5/5 and praised the music composer saying, "This is Pritams year, delivering chartbusters by dozens all through the year, he can now look forward to another bountiful of hit songs up his sleeves with Ajab Prem Ki Ghazab Kahani. Also, Ranbir and Katrina can enjoy a hugely popular track for themselves in the form of Main Tera Dhadkan Teri. Go, pick this one up from the shelves!". The songs Tu Jaane Na, Tera Hone Laga Hoon, Prem Ki Naiya and Mein Tera Dhadkan Teri became chartbusters with Tu Jaane Na being the biggest success.

Awards and nominations

* 2010 - Winner, Filmfare Critics Award for Best Performance - Ranbir Kapoor

Critical response

= Ajab Prem Ki Ghazab Kahani received generally favorable reviews. Subhash K. Jha [film critic and author of The Essential Guide to Bollywood] states: "If youve ever wondered what on earth is on-screen chemistry heres your one-stop all-purpose encyclopedia on celluloid magic. Fasten your see-it belts, as veteran filmmaker Rajkumar Santoshi sheds all his Lajja, and pulls out all stops to do a wacky goofy edgeless weightless comedy of characters who walk in and walk out of frames leaving behind fumes of old-fashioned funnies. Ajab Prem Ki Ghazab Kahani is an airtight trapeze down that familiar romantic lane." Nikhat Kazmi of the Times of India gave it four stars out of five and states: "The newly formented Ranbir-Katrina chemistry sets the screen on fire in this mad hatters tea party. Adding to this is Pritams peppy music score with Neeraj Shridhar, Atif Aslam, Hard Kaur, Sunidhi Chauhan and Mika raising a toast to high-spirited song and dance and Raj Kumar Santoshi penning some of the funniest dialogues in recent times and you have a great escape awaiting you at your favourite audi this weekend. Go, have a ball." Taran Adarsh of Bollywood Hungama gave the film four out of five stars arguing that it "entertains majorly" and that "the romantic moments are endearing. Most importantly, the on-screen chemistry is electrifying. Ranbir and Katrina look great together!". Noyon Jyoti Parasara of AOL India gave the movie 3 out of 5 stars saying, " this is still wrongIts strong point, apart from Ranbir, happens to be its clichéd settings." Omar Qureshi of Zoom gave the film 3.5 out of five stars saying that, the main point to be noted in the film is that, the film is totally dedicated to love and all the things that are related to love and so, it will leave an ever lasting impression on youth. Minty Tejpal of Mumbai Mirror gave the film 3.5 out of five stars, saying that "it seems that Ranbir Kapoor can do nothing wrong. He is just fantastic through the film." Other critics disagreed. Mayank Shekhar of the Hindustan Times gave the film one star and suggests that the film has no "comic bone at all. There is certainly no romance either." Rajeev Masand of CNN-IBN gave it two stars and calls it a "silly comedy that goes for slapstick gags and juvenile jokes that are hard to appreciate." Tanqeed.com review said that "The movie tries very hard to be another Andaz Apna Apna" and that "The movie has a 90s hangover" and "the movie is neither Ajab nor Ghazab".