A serpent living in a swamp called Muruchi was causing problems for local farmers by manipulating the weather. After a divination that a human sacrifice is needed in order to appease the serpent, the court brings a search for someone to sacrifice. Signs are posted that anyone willing to be sacrificed will have their family cared for once they are gone.

 With this, a poor brother and sister, they find one of the signs. The sister convinces her brother that she should be the sacrifice in order to help the family. She makes him promise to keep this a secret from their mother and they return home to see her.

 When the girl meets their mother she lies to her and tells her that she is going to get water from the lake. Even though her mother feels a touch of uncertainly about what she has been told, she tells her daughter to be careful, and sends her on her way. The girl leaves their mother in the care of her brother and the two siblings make a tearful parting.

 Just as the girl is about to be eaten by the serpent as a sacrifice, a god descends to earth and saves the girl by killing the serpent. Her mother, upon hearing of what she is doing, runs with her son to her daughter’s side. They are both happy that the girl is unhurt. The court, impressed with the girl’s devotion to her family, make her a princess and promises her brother a princess’ s hand in marriage. Their mother returns home happy.