The film revolves around Rajni, a shape-shifting cobra who marries a civilian to avenge the death of her spouse at the hands of an evil saint.

Rajiv as a kid is bitten by snake while roaming in the forest but a snake charmer Bhaironath manages to save his life by killing the snake. Years later Rajiv returns from London where his mother wants him to get married to Vijaya.Rajiv comes across a beautiful Rajni an orphan and falls in love with her but his mother objects as she is an orphan later agrees for their marriage .Rajiv and Rajni get married and are living happily until Bhaironath arrives and tells Rajiv's mother that Rajni is actually a snake shifting snake who has come to revenge death of her lover who had bitten Rajiv in childhood.But Bhaironath's true intentions are to capture Rajni as she knows about a hidden pearl which can make him powerful.—[email protected]

Rajiv comes from a very wealthy family, and lives in a palatial home with his mother, who would like him to get married to a beautiful young woman named Vijaya Singh, the only daughter of Thakur Ajay Singh. But Rajiv is in love with a woman named Rajni, who is an orphan and has no family background. When Rajiv mentions this to his mother, she opposes this marriage, but relents when she meets with Rajni and sees that she is a indeed a beautiful woman. Both get married and live harmoniously for quite some time - until the arrival of Bhairo Nnath a religious man, who is capable of controlling snakes. He informs Rajiv's mom that the woman, Rajni, is a shape-shifting venomous snake who has married Rajiv to avenge the death of her spouse years ago when Rajiv was a child. What Rajiv's mom does not know that Bhairavnath has a secret agenda in entrapping Rajni, a secret - the knowledge of which will shatter and change their lives forever. This movie to be followed by a sequel called "Nigahen: Nagina Part II".—rAjOo ([email protected])