A happily married couple see only good days ahead of them; but the husband discovers that he is dying of cancer. Heartbroken at the possibility of leaving his wife behind, he proceeds to write love letters aimed at consoling his wife.

Woo-jin, a furniture designer who wakes up in a different body every day, falls for Yi-soo, a woman he meets through his work.

Se-hee is the most cold-blooded money-lender there is. She takes back her money from those who have borrowed it in the most evil of ways; she seduces a man for money and leaves him and his family in ashes. If someone has a better collateral than the money borrowed, she finds all means to stop that person from returning her the money and making it hers. There are two men next to her. In-ho is her money-line and business background and Yeon-woo is a regular guy who is adored by Se-hee. However, her right-hand man Min-yeong takes them away from her and she realizes everything in the world has a cost...

Yu-jeong is suicidal, yet she reluctantly goes to prison for volunteer work. There, she meets a prisoner who is waiting for death penalty. The two quickly fall in love despite their differences, yet they do not have much time.

Lee Jang-hwan receives widespread acclaim and media attention after successfully cloning human embryo stem cells. A TV news program PD, Yoon Min-cheol, receives a phone call from an anonymous source who says he has worked with Dr. Lee on the stem cell project. The source blows the whistle on Lee's work, revealing how Lee fabricated research results and engaged in unethical practices.

This atmospheric drama follows photographer Min-woo, who enters into a torrid affair with a now-married ex-girlfriend, although he is distracted by a building obsession with the tormented ghost of the young woman who used to live in his apartment.

Sang-hoon is a lowlife gangster, a debt collector exercising thuggish ways to collect his money. The recipient of nothing but anger since his childhood, he expresses himself through violence. When he finally encounters someone who can stand up to him, feisty school-girl Yoon-hee they become unlikely friends.