Raghu befriends Ravi, a homeless man, and provides him with shelter and a job. However, when Ravi sees the photograph of the girl Raghu decides to marry, he asks him to stay away from her.

Kula Deivam was based on a Bengali film Banga Kora by noted writer Prabhavathi Devi Saraswathi

Madhavan marries Thangam. He takes care of Thangam’s mother and brother along with his younger brother. Meanwhile, Madhavan gives shelter to his father’s mistress and her daughter. The evil ladies allege Thangam for loose morals. The rest of the story is how they come into good terms.

Set against the backdrop of World War II, three brothers are separated by war while their sister Kalyani faces immense struggles after being widowed and left destitute. As each sibling endures hardship and societal injustice, their paths cross in unexpected ways, culminating in a dramatic courtroom trial that exposes the harsh realities of their world and sets the stage for a powerful family reunion.