The story takes place in a mother's womb where two eggs that have just been fertilized meet. They start to fight, for each considers the place as their own. After the long quarrel, they both surrender and a good friendship starts between both of them in a way that they get attached to one another and discover they resemble each other in almost everything except one thing that appears later during their developing formation and it determines the gender of each.

During labor, the two got separated for a few hours and that made each of them sad until they meet again and continue their life together. The aim of the story is to teach the child that we, as human beings, are similar in everything, and that we are equal since our formation, and no male differs from female except in one thing.