Long ago in China, there was a legend about the Ninjas of the island nation. Through the rendering of TV, movies, cartoons and games, they portrayed their group of professional killers as if they were gods. When Ye Cheng was a child, he was still ignorant. He did worship Ninjas for a period of time. But later, after being trained by special forces and having extensive access to military knowledge of various countries, Ye Cheng found that the so-called Ninjas were only ancient special forces and they were also human beings. Only because of the poor dissemination of information in ancient times, did they cause half of them. Half-ghost legend....