Gethu (2016)

Fast-paced and fiery, this multi-layered crime thriller revolves around Sethu (Udayanidhi Stalin), a simple and straightforward man who works as a librarian for the retired Colonel Mathews (Rajesh). He lives happily with his father Thulasi Raman (Sathyaraj), mother and sister. His father is a righteous man who works as a physical education instructor at the school in Kambam, Tamil Nadu.

Sethu becomes acquainted with Nandhini (Amy Jackson), a beautiful young woman who is also a kleptomaniac. When she keeps stealing books from the library Sethu tries to confront her, sparks fly and soon they fall in love with each other.

Parallelly, the story follows Craig (Vikranth) a skilled sniper and hired killer, who assassinates an army officer from a distance. After the completion of his mission, he is assigned a new task which is to kill a leading ISRO scientist and treasured asset to the Indian nation, Abdul Kamaal. While on his mission Craig arrives in Sethu's town and begins photographing Colonel Mathews from a distance.

Thulasi Raman is forced to make a complaint against the immoral activities of Kandhan (Mime Gopi), a bar owner with powerful political connections. However, when Kandhan is mysteriously killed and his corpse is dragged out of the water with Thulasi Raman's ring clutched in his lifeless fingers, Sethu's father is neatly framed for the murder.

When his father is arrested for suspicion of the crime, Sethu decides to make it his life's mission to expose the real killer and ensure that justice is served. Can Sethu not only save his father but also safeguard a national jewel?