Lee Yeon-kyung

This time-slip drama centers around Bong Pil and his five friends who travel between the past and present through a manhole in order to stop a wedding scheduled a week later.

Na-mi, a transfer student, becomes a laughingstock on her first day of school because of her strong southern dialect. Six girls jump in to help the new kid adapt to the new environment, and the girls come to call their circle of friends "Sunny."