• Lyricist : Shailendra
• Composer : Shankar - Jaikishan
• Asst. Composer : Dattaram ( Dattu Wadkar)
• Singer : Asha Bhosle , Chorus

A country boy, Raj (Raj Kapoor), from Allahabad, travels to the big city, Bombay, by walking, to earn a living. He falls in love with the poor but virtuous Vidya (Nargis), but is soon seduced by the riches of a freewheeling and unethical lifestyle presented to him by an unscrupulous and dishonest businessman, Seth Sonachand Dharmanand (Nemo) and the sultry temptress Maya (Nadira). He eventually becomes a confidence trickster, or "420," who even cheats in card gambling. Vidya tries hard to make Raj a good man, but fails. Meanwhile, Sonachand comes up with a Ponzi scheme to exploit poor people, whereby he promises permanent homes to them at just Rs. 100. The scheme pays off, as people start hoarding money for a home, even at the cost of other important things. Vidya's contempt for Raj increases even more. Raj becomes wealthy but soon realizes that he paid a very high price for it. When Raj discovers that Sonachand has no plans to fulfill his promises, he decides to make wrongs right. Raj takes all the bond papers of the people's homes and tries to flee Sonachand's home, only to be caught by Sonachand and his cronies. In a scuffle that occurs, Sonachand shoots Raj and he falls unconscious. When people hear the shooting, they come and see Raj nearly dead. Sonachand tells police that Raj was trying to flee after stealing money from his safe, hence Sonachand shot him. Upon this, the "dead" Raj springs back to life, and using pure logic, proves Sonachand's guilt. Sonachand and his partners are arrested, while Vidya happily forgives Raj. The film ends with Raj saying " Yeh 420 Nahin, Shree 420 Hain" (" These are not simply con men, they are respectable con men").

Raj Kapoor's real life children Randhir, Ritu and Rishi were featured in the song "Pyar Hua Iqrar Hua", Rishi revealed that Nargis bribed him with chocolate and recalled it in a 2017 interview

• Track 1 : Mera Joota Hai Jaapaanee, Ye Pataloon Inglistaanee, Sir Pe Lal Topee Rusee... ( मेरा जूता है जापानी, ये पतलून इंग्लिस्‍तानी, सर पे लाल टोपी रुसी... )
• Track 2 : Dil Ka Hal Sune Dil Vala, Sidhi - C Bat Na Mirch Masaala... ( दिल का हाल सुने दिल वाला, सीधी-सी बात न मिर्च मसाला... )
• Track 3 : Ichak Dana Beechak Dana, Daane Upar Dana, Chhajje Upar Ladaékee... ( ईचक दाना बीचक दाना, दाने ऊपर दाना, छज्‍जे ऊपर लड़की... )
• Track 4 : Pyar Hua Ikaéraar Hua Hai, Pyar Se Phir Kyon Darata Hai Dil... ( प्‍यार हुआ इक़रार हुआ है, प्‍यार से फिर क्‍यों डरता है दिल... )
• Track 5 : Shaam Gai Rat Aai Ki Balam Aaja, Taaron Ki Baaraat Aai... ( शाम गई रात आई कि बलम आजा, तारों की बारात आई... )
• Track 7 : Mudaé Mudaé Ke Na Dekh, Mudaé Mudaé Ke... ( मुड़ मुड़ के न देख, मुड़ मुड़ के... )
• Track 8 : Tumhen Kaésam Hai Mere Dil Ko... Jo Jane Vale Mudaé Ke Zara Dekhate Jana... ( तुम्‍हें क़सम है मेरे दिल को... जो जाने वाले मुड़ के ज़रा देखते जाना... )
• Track 9 : Ramayya Vastaavayya - 2, Maine Dil Tujhako Diya... ( रमय्या वस्‍तावय्या-2, मैंने दिल तुझको दिया... )
• Track 10 : Yaad Aatee Rahee Dil Dukhaatee Rahee, Apne Man Ko Manaana... ( याद आती रही दिल दुखाती रही, अपने मन को मनाना... )