Park Ri Hwan (Lee Dong Wook) and Kim Haeng Ah (Jung Ryeo Won) are childhood friends who couldn’t be more different. As the director of an eastern medicine hospital, Ri Hwan selflessly cares for his patients and his mother, while Haeng Ah charges through her life as a feisty and headstrong radio producer. Yet despite their differences and after all these years, Ri Hwan and Haeng Ah complement each other perfectly.