Aayirathil Oruvan (2010)

The film begins with an episode in 1279 AD, when the successor of the last great Chola Emperor, pending invasion, sends his people to a mystery location, to survive the threat. The story resumes with an archaeologist, a coolie and a member of the army going in search of the archaeologist's father to the ruined city that was the place the exiled Chola Prince retreated to. An expedition is promptly arranged, and on the course they stumble on the lost Chola civilization and its king and find unexplained links between them and the culture. The shocking events and the problems that arise forms the crux of the story.