The romance between a warrior from the ancient times and a female doctor from the modern times as well as the process of making a true king.
Ban Ha Jin (Lee Dong Gun), an orphan and high school drop out, is calculating and ambitious. Even though he dropped out of high school and lives with Choi Yoo Kang (Yoon Se Ah) due to extenuating circumstances, he used to be the high school president and hoped to go to college. Through coincidence, he meets Yoon Jae Myung (Lee Jin Wook), the popular former baseball player from high school, at a bar in Switzerland. Ha Jin manipulates a series of events to become Jae Myung's best friend. Also coincidentally, he meets Oh Dan Hui (Kim Hee Sun), the girl he loved and hurt in high school. Oh Dan Hui used to play baseball on the boy's team but now plays softball in college. Her baseball hero is Yoon Jae Myung. All three meet again in Switzerland and again back in Korea. Ha Jin starts working in Jae Myung's father's company and does everything to make the rich chairman like him. Jae Myung starts working as the softball coach of his father's company's team but then gets transferred. He falls in love with Dan Hui who's headstrong and optimistic personality attracts him. He asks Ha Jin for advice, but Ha Jin cannot bear to watch Jae Myung take his true love.
Sad Sonata is a love story about two men and one woman. The young Joon-young (Kwon Sang Woo), who was raised by his mother who sold liquor to American soldiers, met the blind Hae-in (Kim Hee Sun) and they became childhood sweethearts. Then, Hae-in immigrated to the U.S. following her aunt and her uncle[American soldier that married her aunt]. There she met Gun-woo (Yeon Jung Hoon), who was Joon-young's best friend and son of a very rich man. After she received a letter from Hwa-jung saying that Joon-young is dead, she accepted Gun-woo's love. After an operation, Hae-in was able to see again . The story picks up again when composer Joon-young, singer Hae-In, and music producer Gun-woo all meet again.
Min Kyung (Kim Hee Sun) just graduates high school and finishes paying off her father's gambling debt at a liquor restaurant. However, with some borrowed money, she runs away, promising herself that she will find a rich man and live happily ever after. Three years later, she is a stewardess at Asiana Airlines. She constantly looks at the materialistic objects any man has, judging everybody by what they are capable of buying. She meets two-three guys at a time while also attending blind dates with her co-workers. On one blind date, she falls in love with Young Ho (Go Su), thinking that he is one of the few people in the Yacht Club (a meeting of the few richest people in Korea). Young Ho is the son of a poor rice cake house, and works to pay off his dead father's debt. He falls in love with Min Kyung, because she looks exactly like his dead girlfriend. When Min Kyung finds out that Young Ho is not rich, she dumps him, and goes back to a rich man (Son Chang Min) who proposed to Min Kyung once before. However, Min Kyung wakes up to true love and realizes that happiness does not necessarily come in money.