Hero is the story of Korea's top reporters and ordinary citizens fighting against the society elite's abuse of power. Jin Do Hyuk is a clever and talented reporter who ends up living a life of recklessness and despair when the woman he loved dies. He later decides to start a new life by helping other victims of society's crimes, becoming a modern hero who battles against the non-ethical.

Hero is the story of Korea's top reporters and ordinary citizens fighting against the society elite's abuse of power. Jin Do Hyuk is a clever and talented reporter who ends up living a life of recklessness and despair when the woman he loved dies. He later decides to start a new life by helping other victims of society's crimes, becoming a modern hero who battles against the non-ethical.

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 Chan is a doctor'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.

Lee Soo Hyun belongs to a special international narcotic drug crime investigation unit. He witnessed the murder of his mother at the hands of a gangster as a child. Suh Ji Woo is the first love from Soo Hyun's childhood with whom he was seperated from. Soo Hyun is adopted into Kang Min Ki's family and both grew up to become NIS agents. Ji Woo and Soo Hyun are accidentally reunited when the beautiful Ji Woo caught the attention of playboy Kang Min Ki. She and Soo Hyun are seperated once again because of Soo Hyun's vengence against his parent's enemies.

When Gong-chan (Lee Dong-wook) meets the lively and beautiful Yu-rin (Lee Da-hae), he finds out that she has connections to his missing cousin, who his grandfather has been searching for a long time. He asks Yu-rin to lie about being his long missing cousin until he can find his real cousin. She says yes, but soon their feelings for each other get in the way of their plans. Gong-chan's friend Jung-woo (Lee Joon Ki) falls for Yu-rin while Gong-chan's ex girlfriend, Seo-hyun (Park Si Yeon), who is a pro tennis player, tries to win him back. Will the two ever tell each other how they feel? Will Gong-chan ever find his real sister? My Girl was a Top Ten hit in Korea in 2006, aided by the appearance of hot new actor, Lee Joon Ki.

The Story is centered on the love between a musically gifted South Korean man, Sung-jae Jo Hyun Jae, and a Japanese woman, Misaki Nakagoshi Noriko. Misaki, who feels guilty over her boyfriend's death, is transferred to Korean and meets Seong-jae who helps her cure her wounds of the past memories with love.