The Promise (2016 TV series)

The Promise is a 2016 South Korean television series starring Lee Yu-ri (in a twin role), Seo Jun-young, Park Ha-na and Song Jong-ho. It airs on KBS2 on Mondays to Fridays at 19:50, for 102 episodes with the first episode airing on February 1, 2016.

Plot
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 the granddaughter of the Baekdo Company president. Do-hee (Lee Yu-ri) is Na-Yeon’s twin sister, who was separated from her at birth. Hence, they have never met each other. Do-hee works as a reporter at a weekly magazine, and is the girlfriend of Hwi-kyung (Song Jong-ho), who is the successor of Baekdo Company, and Se-jin's step-uncle. After a series of events, Se-jin's family wrongfully placed Na-yeon in a mental hospital. Do-hee manages to track Na-yeon down, and they switch places. Shortly after, Do-hee dies in Na-yeon's place when the building catches fire. After her death, Na-yeon decides to take revenge. She takes on the identity of Do-hee, then marries Hwi-kyung, stepping into Se-jin's family in the process.

Main cast

 * Lee Yu-ri as Lee Na-yeon / Baek Do-hee (dual role) (32 years old)
 * Park Seo-yeon as young Lee Na-yeon / Baek Do-hee (12 years old)
 * Seo Jun-young as Kang Tae-joon (32 years old)
 * Choi Min-young as young Kang Tae-joon (12 years old)
 * Song Jong-ho as Park Hwi-kyung (35 years old)
 * Jang Do-yoon as young Park Hwi-kyung (15 years old)
 * Park Ha-na as Jang Se-jin (32 years old)
 * Gong Yeon-sung as young Jang Se-jin (12 years old)

Supporting cast

 * Lee Na-yeon's family
 * Yoon Bok-in as Yang Mal-sook
 * Jo Hye-sun as Lee Eun-bong
 * Kim Esther as young Lee Eun-bong
 * Han Ga-rim as Lee Geum-bong
 * Kim Min-kyul as young Lee Geum-bong
 * Im Hyun-sung as Lee Joong-dae


 * Jang Se-jin's family
 * Lee Jong-won as Jang Kyung-wan
 * Kim Hye-ri as Park Yoo-kyung
 * Kim Do-yeon as Yoon Young-sook
 * Yoon Joo-sang as Park Man-jae


 * Kang Tae-joon's family
 * Oh Young-shil as Oh Man-jung
 * Song Young-kyu as Heo Poong-dal
 * Kang Bong-sung as Heo Se-kwang


 * Baek Do-hee's family
 * Kim Bo-mi as Ahn Sung-joo
 * Park Chan-hwan as Baek Dong-jin

Others

 * Kim Bo-min as Lee Sae-byul
 * Yoon Byung-hee as Team leader Bae
 * Lee Seol-goo as Park Joon-ik
 * Hong Seung-bum as Park Hee-suk

Guest appearances

 * Lee Yeon-soo as Lee Yoon-ae
 * Yoon Da-hoon as Lee Ki-man

Ratings

 *  The blue numbers  represent the lowest ratings and  the red numbers  represent the highest ratings
 * NR denotes that the drama did not rank in the top 20 daily programs on that date


 * Episodes 78 aired on May 20, 2016

International broadcast
The series aired, one week after initial broadcast, on KBS World with subtitles.

It started airing in Singapore on Channel U. Starting Feb 8 2018.