Nisha Season 1

Adi kidnaps Nisha and holds her hostage, giving her no room to escape from the hideout. Soon, Adi decides to kidnap Nisha's friend, Keerthi and devises a plan. In the meanwhile, a frantic Nisha's father, Murali, runs from pillar to post in search of his darling daughter who has been missing.

Unable to trace his daughter, Murali decides to seek the help of a private detective, Saravanan. He requests Saravanan to help find his daughter and also asks him to work discreetly to avoid any suspicion. On the other hand, after kidnapping Nisha and Keerthi, Adi plans to kidnap Riya, another friend of Nisha.

After kidnapping Nisha, Keerthi, and Riya, Adi decides to play a deadly game with the girls, a game that can possibly kill them. In the meanwhile, private detective Saravanan tries to look for Nisha, and in the process starts to enquire Murali, Kiki, Murali's mistress and Nisha's doctor. Does he find any clue?

Unable to withstand the torture, Nisha, Riya, and Keerthi plot an escape from Adi's hideout. Unfortunately, their plan fails. The trio then devises a plan to murder Adi. However, an error of sorts occurs, and the girls end up killing one among them. Who is the one that gets killed?

In the meanwhile, Adi telephones Murali and starts to play a mind game with him. Murali pleads to Adi to reveal the truth about his daughter Nisha's whereabouts. Adi gets sadistic pleasure from Murali's pitiable state and continues to torture him.

Saravanan gets a step closer to identifying the kidnapper. In the meanwhile, one of the remaining two hostages escapes from Adi's captivity. When Adi realises that one of the girls is missing, he gets angry and wonders how she managed to escape without a trace.

Adi goes on a rampage and threatens to kill Nisha if she doesn't reveal Keerthi's escape strategy. Unable to bear the pain, Nisha becomes unconscious and begins to recall the daunting past of her childhood.

When Nisha refuses to divulge the information about Keerthi's escape, Adi confines her to a wooden box and locks it. Later, he is astonished to find Nisha missing from the box and wreaks havoc in his pursuit to solve the mysteries of the room in a fit of rage.

After failing to hold the girls captive, Adi opens up and narrates his love story and the injustice his wife, Nithya, had to face. As he confesses to having kidnapped Nisha, Keerthi, and Riya to avenge his wife's misery, he discovers a twist in his tale. What is it? Where does this end?