Once upon a there was and old man with three sons and once a year there was a golden apple that ripened the old man told his sons each year about the apple and how some kind of monster ate it , but his sons didn't believe him.
The last one
His sons want disprove so the next time the 'apple ripened' the oldest brother stayed awake but he fell asleep during his shift and did not see the monster.
Encounter with the dragon
The middle son wants to try and get the golden apple but just like the oldest he fell asleep, he also did not see the monster.
Finally the youngest son wanted to try, but his two oldest brother didn't allow him so he waited another and snuck outside and watched but he was determined to find what was eating his fathers apples and didn't fall asleep.
Suddenly, the child saw a dragon standing at his feet taking the golden apple he quickly leaped onto the dragon with his dagger at hand and climbed the scales of the dragon.
He was nervous, he was scared he was feeling every negative emotion but with all his might he delivered the final blow on the dragons head.