Chae Rim

This drama is about two girls, Jin Sun Mi (Chae Rim) and Heo Young Mi (Kim So Yeon). Sun Mi had a nice childhood and grew up with lots of love from her father. Young Mi's mother left her when she was young and her father was a drunk who recently died. She had a hard childhood but never gave up and made it into college. (mydramalist.com)

Yoon Gae hwa, a single mother, needs money to regain custody of her daughter. She works for Sung Min woo, a famous but immature actor, to make ends meet but things change when his daughter arrives. (imdb)