1977 tells the story of a son who is out to find the truth about his father’s life and the reason behind his death. The movie begins in a peaceful coastal village where Sarath Kumar (senior) is a sort of father figure. He is shown as a person who believes in peace and brotherhood. His son, Sarath Kumar (junior) is an acclaimed scientist and has just won a National Award. The whole village is prepared to receive its son, his father too is anxious to welcome him back home. But, his eyes come across a piece of paper, the contents of which seem to shock him deeply. He passes away. His son is dismayed and at the same time intrigued by the contents of the paper. His quest to find the secrets behind what is in the paper takes him to Malaysia where he discovers a disturbing truth about his father’s life. How he sets about correcting all the wrongs that happened in one horrible incident in 1977 is the rest of the story.