Apart from introducing the Tamil director Selvaraghavan as an actor, 'Saani Kaayidham' will showcase a very different side of actress Keerthy Suresh that the audience have probably never seen before. Sharing the screen space with Selvaraghavan, Suresh will be seen playing the character named Pooni, who is trapped in a generational curse that comes true when injustice is imposed upon her. Audiences will get to watch Suresh portraying a strikingly different character in this revenge crime thriller.