Arahan (Korean: 아라한 장풍 대작전; RR: Arahan jangpung daejakjeon) is a 2004 South Korean action film directed by Ryoo Seung-wan and starring his brother Ryoo Seung-bum along with Yoon So-yi, Ahn Sung-ki and Jung Doo-hong. The film was a relative commercial success, selling over 2 million tickets domestically, but wasn't as well received by critics as Ryoo Seung-wan's previous films.
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 Eui-jin, specialist in martial arts, captures the criminal swang 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.