Abhay is a dubbed version of tamil movie Aalavandhan. it is an action thriller based movie in which, Vijay (Kamal Hassan) is a military major. He has a girl friend Tejaswini (Raveena Tandon), whom he impregnates prior to the marriage.
Vijay has a twin brother, Abhay (Kamal Hassan). Abhay is a psychopath, who was jailed for killing his stepmother when he was a kid. Abhay feels that Tejaswini ruins the life of Vijay. Abhay's aim is to save Vijay from Tejaswini by killing her.
Abhay escapes from the jail and is on hunt for Tejaswini. Rest of the movie is about how Vijay saves Tejaswini from Abhay.