[1][2][3] The series is based on the Lee Man-hee stage play Turn Around and Leave, the same work that inspired the 1998 blockbuster film A Promise  [ko] starring Jeon Do-yeon and Park Shin-yang.

It is the third and final installment of the "Lovers" trilogy by writer Kim Eun-sook and director Shin Woo-chul.

Yoon Mi-ju (Kim Jung-eun) is the daughter of a reverend, who has adopted many children and set up an orphanage, and works as a plastic surgeon in a hospital, although her dream is to open a clinic of her own.

Ha Kang-jae (Lee Seo-jin) is an orphan raised by Kang Choong-shik, a gangland boss, and his trusty right hand.

When Kang-jae is wounded by some Chinese gangsters, Mi-ju treats him and he begins to fall for her; meanwhile, Kang Se-yeon (Jung Chan), son of the boss Kang-jae works for, falls in love with Mi-ju, who his mother wants as a daughter in law because she considers her a good catch.