A man is a swindler. He is smart enough to take the bar exam, but he could not become a prosecutor. Disregarding favoritism and biases by prosecutors, the man makes criminals pay for crimes that prosecutors did not.
Lee Gwang Jae is the son of a rich family who is reckless and immature. His father dies and leaves behind large debts. Gwang Jae promises to pay off his debt for his father's honor, but it's not as easy as he thinks. Kim Young Ha supports Gwang Jae with her positive personality and love, giving encouragement to him whenever he needs it.
Hyun Joo had a hard life after losing her mother to a brain tumor at a young age. It was her husband Kim Do Yeong, who saved her. However, she finds out that she will also die soon like her late mother. The fear of leaving her family in the same pain and agony she went through as a child is bigger than the fear of dying. This leads her to tell her husband, “I’ve fallen in love with someone else”, as she hides her pain. During the last moments of her life, she goes off to find true love in.
Park Yoo-Ha studied hard in medical school and finished her intern course. She works hard to become a doctor due to her father. Her father raised 4 children by himself and her oldest sister also sacrificed for the family. Park Yoo-Ha is not interested in other people. Suddenly, her father marries a woman rich enough to own a building.
Meanwhile, Jung Eun-Tae works as a doctor. He volunteered for performing medical service abroad, but he comes back to Korea. Jung Eun-Tae is not interested in marriage, because his father placed priority on his medical work over family and Jung Eun-Tae believes he is like his father.
Cha Sun-Hee is a housewife and she is married to Bong Cheon-Dae. Her husband is currently unemployed. She has a twin sister, Cha Do-Hee, who works as a flight attendant. Although they are identical twins, they have completely opposite personalities. Cha Do-Hee becomes involved in a situation which leads to Cha Sun-Hee pretending to be her flight attendant sister. She then meets co-pilot Song Woo-Jin.
Han Seung-Joo is a single woman in her mid 30's and she works as a PD at a broadcasting station. She does well at her job, but she is not nearly as good when it comes to housework. Han Seung-Joo has a hard time dealing with social prejudices about single women. To get the position of a "married woman," Han Seung-Joo marries Oh Jak-Doo who lives in the mountain. Their marriage is not based on love, but their relationship develops romantically.
Son Moo-Han works as a managing director of an advertising company. An Soon-Jin lost her daughter unexpectedly and she works as a flight attendant. Eun Kyung-Soo is An Soon-Jin’s ex-husband and he is now married to Baek Ji-Min.
Kang Dong-Goo dreams of becoming a movie director, but he is cynical due to bad luck. Cheon Joon-Ki wanted to follow in his father's footsteps and become an actor, but he is now just a minor actor. Bong-Doo-Sik came to Seoul to become a scenario writer, but things have not been easy for him.
When a popular anchorwoman for a prime time news show becomes the suspect in a murder case, her estranged husband - who has worked as a prosecutor in the past but now works as a public defender - decides to defend his wife.
Song Geurim is a radio program writer who isn't exactly talented in writing. She's got the passion, initiative, and drive, but due to her lack of writing skills, she still remains an assistant writer. When she was young, the radio was the only thing in the world that she could share with her blind mother. She was consoled by the sounds of the radio and loved it more than anything, so she became a writer. When her radio program is on the verge of cancellation, she succeeds in casting a top actor Ji Suho, who can't do anything without a script.
Kim Min Gyu has wealth and success, but lives an isolated life due to his allergy of people. He then meets and falls in love with a girl who is pretending to be a robot for her ex-boyfriend, a genius robots professor.
Il Seung was wrongly accused of a crime and imprisoned, and has spent ten years on death row. He manages to break out of prison and somehow becomes a fake cop, then sets out to find a hidden stash of 100 billion won (nearly 100 million dollars) on behalf of criminals who will supply him with a new identity upon receipt. He has three days to find the cash and begin his new life.
The story of people driven by greed. Kang Pil-Joo grew up at an orphanage, but he now works as a managing director of a legal team at a corporation. He is acknowledged for his intelligence and his exemplary job performance. Some of those that work around him are jealous of him. Na Mo-Hyun is an environmental activist and a science teacher at a middle school. She is a good listener and laughs a lot. She dreams of a love driven by fate.