After losing his vision during a storm, Carlos (K.N. Singh) lives with his sister, Maria (Geeta Bali), on the Indian coast in a fishing village. One day a mysterious young woman, Lisa, enters their lives, followed by a mysterious man, Tony Fernandes (Dev Anand). Maria and Tony fall in love with each other, much to the chagrin of Simon, who loves Maria and wants to marry her. Lisa then warns Maria that she has known Tony, they have had an affair together, and he had betrayed her, however, this warning has no effect on Maria. Then a gypsy palm-reader also cautions Maria that she may be headed for disaster at the hands of a stranger. The question remains: who exactly are Lisa and Tony, and what is the reason behind their presence in this fishing community; and whether or not Maria is being drawn into a web of lies and deceit at the hands of Tony?

Set in a fishing village of Goa, this film depicts the ties between Tony, a good-for-nothing man from the city, and Maria, a village girl who loves him innocently. The spirit of Christian love and forgiveness lies at the base of the story, and the film has a strong religious colour to it.