Bird fly high in the sky, so does he know about sky world or the boy who was just born on the land with mesmerising smile. The boy was born on the family where people are loved and care. when he was born all family member were happy and that day whole family enjoyed till the late night. After that they take some rest and fell asleep but the baby who was born just now was still smiling looking at the clouds.After 6 day they decided to give name to the boy. They named him 'KARN'. The boy gradually grows up with the love, care , and affection of his mother, father and other family member. He never went out of door and he don't know anything about the world outside of the door. He always see his parents, grandparents going out and coming in. So, he became curious about outside world and he requested to take him with them. But they didn't want to take him out because they don't want to lose him. Then they decided to ask riddle to him. And they told him if you tell us answer of the riddle then we will allow you to go out but remember karn if you fail to answer the riddle in 5 day you will not mention about goingout of door. karn smiled and said "okay ask but if i answer the riddle then you all will let me go out for roaming around the world". They said the riddle goes like this ::"I go on 4 legs on the morning, on 2 legs at noon, and 3 legs in the evening ." Then all family member went to do their work and karn started to search for answer. Although he read many book but also he was unable to find answer. At the day of deadline he take nap and dream about the girl. Girl said i know the answer about the riddle that is making you worried. Karn asked what is riddle's answer? Girl said i will tell you answer but you need to promise me that you will come in bamboo forest and search for me and if you didn't come to find me i will make you live in this house forever. karn promised her and hurriedly asked for answer. Girl answered, 4 legs in the morning represent childhood, 2 legs at noon represent adulthood and 3 legs in the evening represent the old age. Atlast whole riddles shows the lifecycle of the person. And suddenly karn open his eyes and see all family member surrounding him with wicked smile on their face . They all had confident that he was unable to answer their question. So, they asked him answer and karn answered them calmly. It left the whole family astonished. Unwillingly they have to let him travel outside the door. Before letting him go out family gave him money and some advice about life. When he went out of door he was so happy that his smile worked like a medicine that heals the sadness of people's life. Seeing karn smiling like that family also became happy. After walking for few hours he suddenly remembered about the promise he had made to that girl about searching her in the bamboo forest. But he don't know anything about the location. Although he got education from reputed professors, he never get to know practically about those things. Now he asked around him if they knew anything about bamboo forest. They all answered same that they don't know about bamboo forest. so he kept on walking and walking. He reached the forest near his home but that was not bamboo forest. He heard the birds talking that north to this forest their is a strange forest. When he heard about it he headed toward north and finally found the bamboo forest. He searched every corner of the bamboo forest but stll he didn't find the girl from his dream. When he lost his all hope he suddenly find the bamboo pieces with strange light. He kept that bamboo piece with him in his bag .
One day when he was holding the bamboo piece in his hand he fell hard on ground and that piece fell down in ground. After certain movement of falling down of bamboo piece stairs was formed . He was afraid seeing that and being courageous he stepped toward the stairs. He went up and up, he walked for a month and finally stand stands in fronts of large gate heavily guarded. When those doors opened for certain movement he find that there was not a single guard at door. So , utilizing that time he fled inside the sky town to which the karn himself was unaware.
Hiding himself from the guard he reached the castle and saw that no one was in posjtion to tell him anything about the world. He was in confusion himself. But unexpectedly he saw the girl from his dream and he became excited and happy . When he smiled whole environment became fresh and girl noticed him. So, secretly she took him inside her room and said finally you are hereš.When karn listen her saying it he was astound and after taking rest for 5 min he asked all the question he has when he parted out with his family. Then with a smile in face girl said " I'm marina , and your sister. You are the prince of this world. When you were small you were very naughty and always going around asking for trouble. One day you went out of city without taking permission and telling us where you were going. At the same time our world was going through trouble and through war with the enemy. Because of you father lost the war and we were all kept in prison. when you were on the way back to the palace old women who lost her child saw you and cursed saying "you will take birth in the family of earth and never be able to come here again and this world will go through pain of losing dear one " . But when she became calm she thought that it was too harsh for you and she said " I can't take back my curse but i will make it simpler and said that you will come in skyworld after you complete your 18th birthday in earth". Listening her saying that he became more restless and asked her to leave him alone because he wanted to get some rest. Next day marina was standing in his door and requested him to come with her for making peace in palace.