After the Spartan king, who was Leonidas, was dead by Persian king, the son of the king, called Heon, knew the fact that his father was killed by Persian army. At that time, heon was 8 years old. Heon decided to revenge on Persian all. So, Heon tried to be powerful and strong. For example, Heon learned skills of fighting and trained his right thumb. After 20 years, his thumb became 3 times bigger than those of ordinary people. Moreover, Heon hit nail with his thumb. In other words, his thumb was not only a weapon but also tool for killing someone. One day, Heon had a chance to revenge to Persian king. They faced on the bridge. Heon breathed deeply and was thinking about his father's dead. Heon concealed his thumb and approached the Persian king. However, Heon was killed by himself. Because Heon hit his nose with his right thumb like Bruce lee, Heon didn't revenge and was dead in front of enemy.