When a thief driving a motorcycle steals a purse of a pedestrian, the clumsy, naive and honest rookie policeman Sang-hwan runs after him, but the skilled specialist in martial arts Eui-jin captures the criminal and Sang-hwan is severely injured. She brings Sang-hwan to her home, where the six Masters of Tao heal him and believe that he has a powerful Qi, the spiritual energy of the universe, and could be a powerful warrior. Sang-hwan begins his training to ascend to a Maruchi, while the evil and ambitious Heuk-woon is accidentally released from his imprisonment. The powerful Heuk-woon attacks the masters, searching for a key that they protect, which would permit him to become an Arahan and dominate the world. When the masters are defeated, Sang-hwan and Eui-jin are the only and last hope to mankind.