Yuga movie revolves around Narrain (Nasser) who a scientist and his assistant Banu (Swarnamalya) are conducting a research on comets. By chance they discover the imminent doom that will befall the people of the world due to a comet. To prevent the people from panicking they decide to hide this matter from the public. They organize a World scientists’ Conference to find a solution for this impending disaster.
In that conference through a senior lady scientist they come to know about an organization “Akora” which kills and terrorizes human beings. Narrain refuses to believe this information. Meanwhile Banu is shocked to find that her father is the head of Akora organization. But Narrain doesn’t believe this also.
Akora kills the senior lady scientist who was investigating about them. In this situation college students Sri (Richard), Rishi (Manikandan) and their friends comes to Kolli hills for doing some research. Unfortunately “Akora” association kills one of his friends.
Everyone is frightened and gets lost in different directions. Meantime the police arrest Narrain.