
The Promise
Overview
Na-Yeon is a bright woman. She supports her boyfriend Tae-Joon, who is from a poor background, and has even given up entering a university. But Tae-Joon dumps her for his success and goes with Se-Jin, who is a granddaughter of Baekdoo Company president. Do-Hee is Na-Yeon’s twin sister. She is arrogant and tough. Do-Hee works as a reporter at a weekly magazine. After Na-Yeon’s death, Do-Hee decides to take revenge. She takes on the identity of her sister Na-Yeon. Do-Hee then meets Hwi-Kyung, who is successor of Baekdoo Company.
Seasons

Season 1
102 episodes
Cast

Lee Yu-ri
Lee Na-Yeon / Baek Do-Hee

Song Jong-ho
Park Hwi-Kyung

Park Ha-na
Jang Se-Jin

Seo Jun-young
Kang Tae-Joon

Lee Jong-won
Jang Kyung-Wan

Hye-ri Kim
Park Yoo-Kyung

Yun Ju-Sang
Park Man-Jae

Kang Bong-sung

Kim Esther
Lee Eun Bong (Young)

Jang Do-yun
Young Park Hwi Kyung