Sundar (Raj Kapoor), Gopal (Rajendra Kumar) and Radha (Vyjayantimala) have been friends since childhood. As they grow into adults, Sundar develops an obsessive romantic attraction to Radha, but she prefers Gopal, who is also in love with her. Yet, as Sundar has confided his feelings for Radha to him, Gopal decides to sacrifice his love for his friend’s sake. Radha systematically resists Sundar’s overtures, but to no avail. For him, she is the only woman in the world. Matching Sundar’s great love for Radha is his unswerving devotion to his friendship with Gopal.
Eventually, Sundar enlists in the Indian Air Force and is assigned to a military mission in Kashmir. Before leaving, he extracts a promise from Gopal, whom he trusts implicitly, never to let any man come between Radha and himself while he is away. Subsequently, Sundar’s airplane is shot down over Kashmir. He is listed as MIA and presumed dead. This news saddens Radha and Gopal, but they are nonetheless now free to profess their love for one another. Among other expressions of love, Gopal writes her an unsigned prem patra (love letter) which touches her particularly and which she hides away. Just when they begin taking steps to be married, Sundar returns, safe and sound. The self-effacing Gopal sacrifices himself once more, stepping back into the shadows, watching as the reborn Sundar resumes his wooing of Radha. Inevitably, the two marry.
After the couple returns from an extended European honeymoon, Sundar is deliriously happy. His life’s dream has been realised. Radha is resolved to be faithful to her husband and to put Gopal out of her mind. She privately asks him to stay away from her and Sundar because of the torture his presence causes her. Sundar’s devotion to Gopal, however, is such that he constantly tries to draw him into their life, much to Radha’s chagrin. The perfection of their marital bliss is, however, shattered when Sundar accidentally discovers the unsigned love letter Gopal had written to Radha. Sundar is thunderstruck, and assumes that Radha has been unfaithful to him. Producing a pistol, he demands she divulge the name of the supposed lover and threatens to kill the man, but she refuses.
In the days that follow, Sundar becomes obsessed with discovering the identity of the letter's author and cannot return to normalcy. Radha’s life becomes miserable, lived out against the incessant drama of Sundar’s jealousy, threats, anger and fixation with the letter. Eventually unable to bear the wretchedness of her existence with Sundar any further, Radha flees to Gopal for help. Sundar takes the same route, unaware that Radha has gone to Gopal’s house. There, matters come to a head. The overwrought Gopal admits his authorship of the infamous letter to Radha, an admission which almost destroys his friend. Gopal, perceiving no exit from the impasse at which the three have arrived, kills himself with Sundar’s pistol. Radha and Sundar are finally reunited - in mourning.
- Genre: Romantic
- Runtime: 238 Minutes
- Awards: Bengal Film Journalists' Association Awards, 12th Filmfare Awards Best Film Raj Kapoor,
Sangam (English: Confluence) is a 1964 Bollywood Romance film written by Inder Raj Anand, produced and directed by Raj Kapoor. The film stars Vyjayanthimala in the lead role opposite Raj Kapoor and Rajendra Kumar with Iftekhar, Raj Mehra, Nana Palsikar, Lalita Pawar, Achala Sachdev and Hari Shivdasani appearing in supporting role.
Sangam was Raj Kapoor's first color film, distinguished by its technicolor and epic length (even by Bollywood standards).
It became a hit in India and is considered a classic today. One of the features of the film that became widely used later on in Bollywood is the use of foreign locales for on-location shooting, such as Venice, Paris, and Switzerland. This started the Bollywood trend of shooting songs sequences abroad (primarily in Switzerland), against the background of "exotic" landscapes.
Director Dasari Narayana Rao remade the film in Telugu and Kannada languages as Swapna.