The story of "Lovers" revolves around the lives of Ha Kang Jae and Yoon Mi Joo. Kang Jae and Mi Joo are two people from very different worlds who fall in love with each other. Mi Joo is a simple and kind-hearted soul who teaches Kang Jae to be a "better person". Ironically he leaves his love-time love to be with Mi Joo.
Kang Jae to Mi Joo - "You once asked why I saved trash like you. I am trying - to not be trash."
Kim Jung Eun as Yoon Mi Joo
Mi Joo is a plastic surgeon. She is a feisty happy-go-lucky character. Her father is a poor country pastor who runs an orphanage. She works to support her family. Her dream is to open a hospital of her own. By chance, she saves Kang Jae's life when he was stabbed in an attack. She finds herself slowly falling for Kang Jae.
Lee Seo Jin as Ha Kang Jae
Kang Jae is an orphan who was taken in by President Kang (a gangland boss) when he was sixteen. He rose through the ranks in President Kang's organization and is the trusted right-hand man of President Kang. He is a loyal servant and does not crave benefit for himself. As such, the other trusted lieutenants of President Kang are jealous of him and plot to bring about his downfall.
Kim Kyu Ri as Park Yoo Jin
Yoo Jin first met Kang Jae when he went to threaten her to pay her father's debts. They became lovers and were together for 6 years before Mi Joo came onto the scene. She is also Sae Yeon's first love.
Jung Chan as Kang Sae Yeon
Sae Yoon is President's son. He has always felt neglected by his father. He developed a hatred for Kang Jae when his father gave Kang Jae the watch which President Kang always wore. He is in competition with Kang Jae his whole life, even losing the woman he loves to Kang Jae.
