Rajkumar is a 1964 Hindi film directed by K Shankar. The film stars Shammi Kapoor

Shammi Kapoor

Shammi Kapoor was an Indian film actor and director. He was a prominent lead actor in Hindi cinema from the late 1950s until the early 1970s....

, Sadhana

Sadhana (actress)

Sadhana is an Indian Bollywood actress. She was one of the top stars in the 1960s and the early 1970s. Beside becoming the fashion icon for young Indian girls with her specific hair style, still known as Sadhana cut, she become famous as Mystery Girl with her three suspense thriller films namely...

, Pran, Prithviraj Kapoor

Prithviraj Kapoor

Prithviraj Kapoor , 3 November 1906 – 29 May 1972) was a pioneer of Indian theatre and of the Hindi film industry, who started his career as an actor, in the silent era of Hindi cinema, associated with IPTA and who founded Prithvi Theatres, a travelling theatre company based in Mumbai, in...

, Om Prakash

Om Prakash

Om Prakash was an Indian character actor. He was born in Jammu as Om Prakash Chibber. He used to play the role of Kamla in the stage play by the famous Dewan Mandir Natak Samaj Koliwada. Starting his career in 1942, he was a popular supporting actor from the 1950s until the 1980s. He was one of...

 and Rajindernath

Rajindernath

Rajendra Nath Malhotra was a comedian actor in Indian Hindi and Punjabi films.-Early life and family:His family was from Peshawar but settled in Jabalpur in Madhya Pradesh. He studied in college at Darbar College, Rewa where Arjun Singh and R.P...

. The music is by Shankar Jaikishan

Shankar Jaikishan

Shankar Jaikishan , also known as S/J, is an Indian music composer duo in the Hindi film industry, working together from 1949–1971....

. The film became a box office hit.http://boxofficeindia.com/showProd.php?itemCat=170&catName=MTk2NA

Plot
The Maharaja is eager to see his foreign-returned son, Bharat Pratap who will eventually take over the reins of the region. When he finally gets to see his son, he is shocked to see that the crown prince is in fact a "clown" prince. He openly shows his disgust and disappointment, and decides to continue to rule. Bharat and his friend, Kapil, decide to dress incognito and mingle with the general public and find out if there is anyone conspiring to dethrone the king. What they find out will not only change their lives, but will endanger the lives of their loved ones as well.