A woman and her child are cruelly abandoned by her husband. She struggles to bring up the child and he grows up to be a talented singer (Kamal Hasan). But now this young man’s only ambition is to find his father. His mother reluctantly agrees and gives him a letter to take with him. Traveling to Simla, he dreams of being re-united with his father. A group of young college students is on the bus with him and he notices a vivacious girl (Reena Roy) and begins to fall in love with her. In Simla, the young man’s father rejects him…??