Set during the Joseon Dynasty, Ryung acts as a useless gangster in the marketplace by day but at night he is a chivalrous robber who robs corrupt government officials to give to the poor. After each robbery he leaves behind a wooden branch from a plum tree at the site of the robbery to take responsibility for the robbery. The poor citizens only know him as Iljimae. Bong Soon is a hilarious girl with good martial art skills and lives as a swindler. She only loves Ryung and sacrifices her whole life for him. Eun Chae is a government official's daughter and is good in nature and usually helps miserable people. She meets Iljimae once by chance, and their sweet love story begins. However, her love puts Iljimae in a dangerous situation because an Imperial Guard also loves her.


Cast
* Lee Joon Ki as Iljimae / Yong / Lee Geom
* Han Hyo Joo as Eun Chae
* Lee Young Ah as Bong Soon
* Park Shi Hoo as Shi Hoo / Ja Dol

Extended Cast
* Lee Moon Shik as Swe Dol (Yong's adopted father)
* Kim Sung Ryung as Dani (Shi Hoo's mother)
* Lee Won Jong as Byun Sik (Eun Chae's father)
* Ahn Kil Kang as Kong He / monk (Bong Soon's adopted father)
* Moon Ji Yoon as Dae Shi (Yong's friend)
* Kim Chang Wan as the king
* Kim Roe Ha as Sa Cheon (chief assassin)
* Kim Moo Yul as Shi Wan (Eun Chae's brother)
* Do Ki Suk as Hee Bong / Slick (Castor Oil gang boss)
* Kim Hyun Sung as Heung Kyun
* Jung Jae Eun as Sim Seok
* Suh Dong Won as Eun Bok (Hunter Jang's son)
* Lee Won Jae as Hunter Jang
* Kim Kwang Sik as Geok Doo
* Yang Jae Sung as Shim Gi Won
* Jo Sang Ki as Moo Yi (Sa Cheon's follower)
* Lee Il Hwa as Lady Han (Geom's mother)
* Son Tae Young as Lee Yeon (Geom's older sister)
* Jo Min Ki as Lee Won Ho (Geom's biological father)
* Yeo Jin Goo as young Geom
* Kim Yoo Jung as young Eun Chae
* Jung Da Bin as young Boon Soon
* Ahn Ji Hong