Ramachandran nair is a father of 3 boys and his wife is prabha. They lives in a kerala style nalukett home. 35 year old son gopi married 34 year old reshma. They don't have children. Second son Dileep 30year old recently married his lover swetha. The next day is pournami and Dileep introduce a special custom the family have been following for 3 years to his wife swetha. The special pooja they did in every pornami and amavasi for wellness of the family and their success in their family business. The pooja should be done by the elder female prabha. She should be spend her time for prayer in a special pooja room in upper floor from the sun goes down till the next day. While the other members should be completely naked in ground floor. They should be in fasting and don't eat non veg food. When the sun disappear the other members get naked and does their daily routine like always. That time no one cares about their relationship. No barrier of relationship. Anyone can have sex infront of others. No shame or nothing. It was custom suggested by a northindian tapasvi. Swetha was stunned about this secret of their family. She was curious about how this works. The day of pournami the disappear they all took bath and prabha went to upstairs. Swetha was shy to face others. But all others were very calm and does their work like nothing happened. Shwetha went to kitchen and saw naked Reshma. They did cooking. At dining swetha saw every other members of that family. Ramachandran nair appreciate swetha for accepting their custum without judging them. After finishing the dinner boys did dishes and clean the kitchen. Reshma bring swetha to father's room. Ramachandran nair was sitting in his chair. Reshma instructed that to sit infront fathar in law like an offering. Ramachandran nair initiated the next step. Swetha watched her father in law fucking elder daughter in law like she is a slut