(천상의 약속)is a February 1, 2016 - TV series directed by Jeon Woo-Sung South Korea.
Na-Yeon ( Lee Yu-Ri ) is a bright woman. She supports her boyfriend Tae-Joon ( Seo Jun-Young ), 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 ( Park Ha-Na ), who is a granddaughter of Baekdoo Company president.
Do-Hee ( Lee Yu-Ri ) 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 ( Song Jong-Ho ), who is successor of Baekdoo Company.