In the story of Glory Jane (also known as Young Love Jae In), Yoon Jae-In (Park Min Young) is a hard-working nurse who does not remember her past. In fact she is the daughter of Yoon Il-goo (Ahn Nae Sang) who was the president of a trading company. He was killed in a car accident by his friend Seo Jae-myung (Son Chang Min) by ordering his former chauffeur Kim In-bae (Lee Ki Yeol), to make sure that Jae-myung takes over control on the company. When Jae-In's mother Eun-joo (Jang Young Nam) received news of her husband's accident she took Jae-In and drove to the hospital. However, due to heavy rains, they got into a car accident that caused by Jae-myung's goons, which separated the mother and daughter. Jae-myung ordered In-bae to send Jae-In, who had lost all of her memories at the time, to an orphanage, where In-bae told her to never forget her name. 17 years later, In-bae's son, Young-kwang (Chun Jung Myung), is a baseball player who had a fallout with his rival, Jae-myung's son, In-woo (Lee Jang-woo). He was spoiled and arrogant, and when he was injured, he was brought to the same hospital. There, Young-kwang met Jae-In from her saving him with a blood transfusion. However, In-bae was chased and killed in an accident by Jae-myung's goons, under the order of Jae-myung, to prevent In-bae from revealing Jae-myung's dark secrets. Young-kwang decided to quit being a baseball player and owning his father's noodle shop. Jae-In also quit her job as a nurse to find a job with Young-kwang. In-woo found himself as a disowned son by his father for his unsatisfactory behavior and Jae-In, Young-kwang and In-woo found job at Jae-myung's officer. Eun-joo then awake from coma and unconscious in a hospital 17 to 18 years later. Seo In-chul (Park Sung Woong) had lover named Kim Kyung-joo (Kim Yun Joo) who happened to be Young-kwang's runaway sister.
Jae-In eventually able to regain her long-lost memories after she managed reunited with her long-lost mother, and then fighting back against Jae-myung's will soon after, despite Jae-In forced to reveal her "true" identities by Jae-myung and his desperation for fully taking control of the company, which actually belongs to Yoon family. In-woo discovered that In-chul behind his kidnapping as child. With help of officer workers, both Young-kwang and Jae-In must working together to go all out against Jae-myung who attempts to hide the secrets for life with all the necessary mean.
