After running away from home, Prince Naresh Kumar Singh (Dev Anand) now calls himself Dilip Singh, returns home after a period of 18 years. He travels by ship, and meets Reeta Singh (Saira Banu), and after a series of misunderstandings, both fall in love with each other. When Dilip reaches Devangarh, he is shocked to find that his brother, Rana Mahesh Kumar Singh (Murad) is dead; his mother, Rajmata Rajeshwari (Durga Khote) is blind; and the throne-prince to be crowned is the Senapati Uday Singh (Premnath), who has also killed Naresh. Rajmata is convinced that her son Naresh is still alive, and will return one day, and refuses to permit Uday to ascend the throne. In order to fool the Rajmata, Uday recruits Dilip to pose as the missing prince, Naresh. How long will Uday Singh continue to pull wool over the eyes of the Rajmata? Will Dilip alias Naresh Singh survive long enough to ascend the throne, and reveal his true identity?

Dev Anand as Naresh Kumar Singh / Dilip Singh

Saira Banu as Reeta Singh

Prem Nath as Senapati Uday Kumar Singh

Shashikala as Mohini

Durga Khote as Rajmata Rajeshwari

David Abraham as Dilip's friend

Asit Sen as Reeta's Secretary

Sulochana Latkar

Harindranath Chattopadhyay as Thakur Shamsher Singh

Tarun Bose

Murad as Rana Mahesh Kumar Singh

1 "Tere Siva Kaun Hai Mera" Sharda Shailendra

2 "Tujhko Dekh Kar" Asha Bhosle Hasrat Jaipuri

3 "Pyar Mohabbat Ke Siva" Mohammed Rafi, Asha Bhosle Hasrat Jaipuri

4 "Huye Aap Naraz Khuda Khair Kare" Mohammed Rafi Shailendra

5 "Aaj Aaye Re Banke More Saiyan" Usha Mangeshkar, Asha Bhosle Shailendra

6 "Hello Hello Sun Sun Sun" Sharda Hasrat Jaipuri

7 "Dekho Dekho Madam" Mohammed Rafi, Manna Dey Shailendra

8 "Sab kuch hai tujh mein " Lata Mangeshkar Shailendra

9 "Milgayi milgayi re" Mohammed Rafi Hasrat Jaipuri