The brave ninja Kim received a task from his head of the order to penetrate the guarded city building and steal secret documents from there. You in the game Hero Ninja will help your hero complete this task. Your character will move along the roofs of city buildings, gradually gaining speed. Under your leadership, your character will have to jump and fly through the gaps between the buildings. As soon as you encounter an enemy, you will have to click on the screen with the mouse to force your hero to strike with the sword and thus destroy his enemies.