Oh Shin-young is a hospital cafeteria nutritionist with a bright personality, who is happily married to Yoon Min-joon, who works in the sales department of a food company. But while giving birth, Shin-young falls into a vegetative state induced by the hospital's chief obstetrician Go Hyun-sung. Hyun-sung is Min-joon's ex-girlfriend who is still in love with him, despite being married to Chae Hyuk-jin, the director of a food company and Min-joon's boss. When Hyuk-jin learns of his wife's betrayal, he plans his revenge.

Ko-bong has a huge crush on Gye-soon who works at a fast food restaurant without knowing that the girl he love is a spy from North Korea.

A college freshman majoring in drama finds herself falling in love with a chain-smoking guest lecturer at her school despite their substantial age difference.

Seven-year-old girl Shin is sold off as a servant. She takes with her the 50-cent coin her grandmother gave her. However, at the master's house, Shin is accused of stealing the money and beaten. Shin escapes to mountains where she falls into a faint. Jin-ho, a student soldier, runs away from the army into mountains. He saves Shin and they live in the mountain where he teaches her how to read and fall in puppy love with each other. After the winter, Shin and Jin-ho go down the mountain. But they are discovered by soldiers who end up killing Jin-ho. Shin takes the harmonica that belonged to Jin-ho and goes home. When her father beats her and plans to sell her off again, Shin leaves in search of her mother. Shin finds her mother who is a kisaeng. Understanding that she can't stay, Shin leaves to become a servant. Learning that her grandmother is near death, Shin returns home and vows to overcome their poverty.