Hye-sung grew up poor but he has a gifted talent for baseball. Eom-ji has watched over him since they were young. Hye-sung falls in love with Eom-ji but when she transfers to another school, they don't see each other for years. Hye-sung and Eom-ji meet again at a baseball field but Um-ji is now the girlfriend of the exceptional hitter of high school, Ma Dong-tak. Hye-sung competes endlessly with Dong-tak over Eom-ji. But he ends up with a serious shoulder injury and gives up baseball. Then Manager Sohn Byung-ho gathers up dismissed baseball players and forms a team. Manager Sohn puts his team through extreme training and Hye-sung returns to the baseball world. He competes once more with Dong-tak, who is by Eom-ji's side.

Er Woo Dong translates to "entertainer," a rough approximation of the duties of 14th-century Korean courtesan Er Yoon Chang. After a lifetime "in service," Er Yoon Chang retires to a faraway village. Meanwhile, her powerful father, ashamed of his daughter's lifestyle, dispatches an assassin to do her in. Er Yoon Chang is protected by her faithful deaf-mute bodyguard, but only up to a point.