Colors TV's Naagin is the story of two icchadhari Naagins - Shivanya (Mouni Roy) and Shesha (Adaa Khan) . Shivanya wants to avenge her parents' death by killing their murderers- Ankush, Viren and Tanvi's dad, with two other unknown people.
Suri is apparently one of the unknown people. Shivanya looks like a loving and delicate housewife, but, she hasn't forgotten her revenge. When Ankita casually mentions of Suri having six fingers, Shivanya gets infuriated because she knows that, one of the killers has six fingers.
Shesha also confirms that Suri is one of the killers of Shivanya's parents. She and Shesha devise a plan to attack and kill Suri. Shesha brings Suri to the temple where is he is taken aback seeing Shivanya and Shesha's 'naagin' avatar.
Both the naagins will charge at Suri and spit venom upon him with the intention of completely destroying him. However, all their attacks will bear no result as Suri will remain safeguarded by the special ring that he adorns.
The feral naagins will somehow manage to remove the ring. Shivanya will attack him with a Trishul and thus, kill him finally. This is how Shivanaya will seek her long due revenge.
One enemy of Shivanya is dead now and she has four enemies left. Apart from this, Ritik's (Arjun Bijlani) love for Shivanya makes her weak as she finds it difficult to keep him away.