A rich estate owner is killed by his second wife and her brother Aadimoolam (Radharavi). The estate owner's son Raja (Rajinikanth) returns from USA and learns of this. In order to bring the culprits to book, he makes his friend Sethupati (Janakraj), a rickshaw puller, act as Raja. But soon, Aadimoolam learns of this and kills Sethu and frames Raja as the killer. Raja is sentenced to death. In the same village where Raja lives, there exists his lookalike, Chinnaraasu (Rajinikanth again), whose aim in life is to wed his sweetheart Lakshmi (Nadia). Raja escapes from jail and meets Chinnaraasu and makes Chinnaraasu take his place in jail. After many a twist and turns, Raja brings the culprits to book. At the end Raja marries Senkamalam(Radha)and Chinnarasu marries Lakshmi.
Dr. Vasi (Rajnikanth) invents a super-powered robot, Chitti, in his own image. The scientific body, AIRD, that must approve the robot, declines it based on its not having emotions and the ability to make rational judgment.
A young doctor is suspected when a series of Jack the Ripper copycat killings is committed. However, when the doctor himself is murdered, his identical twin brother claims to have seen visions of the true killer.
A little boy whose dreams transcend reality is sucked into his own fantasy, which is everything he has dreamed of, until he unleashes an old secret that may not only destroy this perfect dream world but reality itself.
Five years after they defeated Zuul, the Ghostbusters are out of business. When Dana begins to have ghost problems again, the boys come out of retirement to aid her and hopefully save New York City from a new paranormal threat.