Dosa dan Cinta centers on a woman, Ratih, who was unjustly cast out and separated from her daughter after a forbidden love affair. Fifteen years later, her daughter Kanaya returns home and unknowingly sets off a chain of events that unravel dark secrets, test old friendships, and expose long-buried betrayals. As truths surface, the past collides with the present-forcing every character to face the consequences of their silence, lies, and choices.