Overview
Smile Again (, lit. Smile, Dong-hae) is a 2010 South Korean daily television drama, starring Ji Chang-wook, Do Ji-won, Oh Ji-eun, Park Jung-ah and Lee Jang-woo. It aired on Korean Broadcasting System's premier channel KBS1 from October 4, 2010 to May 13, 2011 on Mondays to Fridays at 20:25 (KST) for 159 episodes.
Plot
Prologue
Over 40 years ago, the Cho family lost their daughter (Cho Dong-baek) in a severe storm and almost drowned. Although Dong-baek survived, she suffered brain damage, erasing her past memories and left with the mental capacity of a nine-year-old. Despite the tragic circumstances, she was adopted by an American family and renamed her Anna Laker. Even though she has intellectual limitations, she can function almost normally like an adult. As a young adult, she fell in love with a Korean man, who used the English name James (aka Kim Joon), while he was studying abroad in New York. Due to personal circumstances, James had to leave Anna, but he asked Anna to wait for him and he'll find her. James did return to find Anna, but by then, she relocated and couldn't find her whereabouts; he returned to Korea.
A year or two later, James encountered Hong Hye-sook (adopted daughter of the Cho family), a woman that deeply loved James and didn't want to let him go. She pressured James to stay with her and the two got married and had a son together, Kim Do-jin. Unknown to James, Anna was pregnant and gave birth to their son, Carl Laker (aka Dong-hae). Anna would spend the next 27 years, waiting for James while being a single mother to Carl. Their past, present, and future would all change when the Laker family decided to head to Seoul.
From Wikipedia (CC BY-SA 4.0).